RLV12 Create SD-Card

SD-Card

Before you can use an SD-Card you need to format it. In this description I will be using macOS. Be warned this will delete all files on the SD-Card. Always make sure that you check the device id or disk number of the SD-Card you want to format.

In my example the SD-Card is in /dev/disk3

Format the SD-Card

When you have inserted the SD-Card you must first unmount all volumes that are mounted on this SD-Card. Then you partition the SD-Card using a MBR partitioning scheme. In the example I will have a total of 9 partitions.

The first 8 partitions will be created with a size of a RL02 which is exactly 20480 blocks. I will format each of the partition as a “FAT12” volume and give them volume names DL0, DL1, etc., the names are not important, but help to identify the partitions.

For a partition to be usable as disk image by the RLV12 emulator it has to be of type “Linux” and it has to have the exact size of a RL01 or RL02 volume. However many operating system are not able to create a partitions of type “Linux”. Therefore I have taken “FAT12” as the starting type. You will see later how we can change the partition type using the user interface of the RLV12 emulator.

The 9th partition I create is of type “MS-DOS” which is equivalent to the standard used by Windows for the remaining partition size. Here you can later place disk images that you can individually attach to one of the 4 units. Typically this will be a FAT-32 partition. Make sure it will not be exFAT as this is not supported by the RLV12 emulator.

Note the very long command line using diskutil to partition the disk.

Peters-Mini:v2 peter$ diskutil unmountdisk /dev/disk3
Unmount of all volumes on disk3 was successful
Peters-Mini:v2 peter$ diskutil partitionDisk /dev/disk3 9 MBR "MS-DOS FAT12" DL0 20480S "MS-DOS FAT12" DL1 20480S "MS-DOS FAT12" DL2 20480S "MS-DOS FAT12" DL3 20480S "MS-DOS FAT12" DL4 20480S "MS-DOS FAT12" DL5 20480S "MS-DOS FAT12" DL6 20480S "MS-DOS FAT12" DL7 20480S "MS-DOS" FILES R
Started partitioning on disk3
$<3>Unmounting disk
$<3>Creating the partition map
$<3>Waiting for partitions to activate
$<3>Formatting disk3s1 as MS-DOS (FAT12) with name DL0
$<3>512 bytes per physical sector
/dev/rdisk3s1: 20424 sectors in 2553 FAT12 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 sec=20480 mid=0xf8 spf=8 spt=32 hds=16 hid=63 drv=0x80
$<3>Mounting disk
$<3>Formatting disk3s2 as MS-DOS (FAT12) with name DL1
	$<3>512 bytes per physical sector
/dev/rdisk3s2: 20424 sectors in 2553 FAT12 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 sec=20480 mid=0xf8 spf=8 spt=32 hds=16 hid=20601 drv=0x80
$<3>Mounting disk
$<3>Formatting disk3s3 as MS-DOS (FAT12) with name DL2
$<3>512 bytes per physical sector
/dev/rdisk3s3: 20424 sectors in 2553 FAT12 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 sec=20480 mid=0xf8 spf=8 spt=32 hds=16 hid=41139 drv=0x80
$<3>Mounting disk
$<3>Formatting disk3s5 as MS-DOS (FAT12) with name DL3
$<3>512 bytes per physical sector
/dev/rdisk3s5: 20424 sectors in 2553 FAT12 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 sec=20480 mid=0xf8 spf=8 spt=32 hds=16 hid=61677 drv=0x80
$<3>Mounting disk
$<3>Formatting disk3s6 as MS-DOS (FAT12) with name DL4
$<3>512 bytes per physical sector
/dev/rdisk3s6: 20424 sectors in 2553 FAT12 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 sec=20480 mid=0xf8 spf=8 spt=32 hds=16 hid=82215 drv=0x80
$<3>Mounting disk
$<3>Formatting disk3s7 as MS-DOS (FAT12) with name DL5
$<3>512 bytes per physical sector
/dev/rdisk3s7: 20424 sectors in 2553 FAT12 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 sec=20480 mid=0xf8 spf=8 spt=32 hds=16 hid=102753 drv=0x80
$<3>Mounting disk
$<3>Formatting disk3s8 as MS-DOS (FAT12) with name DL6
$<3>512 bytes per physical sector
/dev/rdisk3s8: 20424 sectors in 2553 FAT12 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 sec=20480 mid=0xf8 spf=8 spt=32 hds=16 hid=123291 drv=0x80
$<3>Mounting disk
$<3>Formatting disk3s9 as MS-DOS (FAT12) with name DL7
$<3>512 bytes per physical sector
/dev/rdisk3s9: 20424 sectors in 2553 FAT12 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 sec=20480 mid=0xf8 spf=8 spt=32 hds=16 hid=143829 drv=0x80
$<3>Mounting disk
$<3>Formatting disk3s10 as MS-DOS (FAT) with name FILES
$<3>512 bytes per physical sector
/dev/rdisk3s10: 826112 sectors in 51632 FAT16 clusters (8192 bytes/cluster)
bps=512 spc=16 res=1 nft=2 rde=512 mid=0xf8 spf=202 spt=32 hds=54 hid=164367 drv=0x80 bsec=826560
$<3>Mounting disk
$<3>Finished partitioning on disk3
/dev/disk3 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *507.4 MB   disk3
   1:                 DOS_FAT_12 DL0                     10.5 MB    disk3s1
   2:                 DOS_FAT_12 DL1                     10.5 MB    disk3s2
   3:                 DOS_FAT_12 DL2                     10.5 MB    disk3s3
   4:                 DOS_FAT_12 DL3                     10.5 MB    disk3s5
   5:                 DOS_FAT_12 DL4                     10.5 MB    disk3s6
   6:                 DOS_FAT_12 DL5                     10.5 MB    disk3s7
   7:                 DOS_FAT_12 DL6                     10.5 MB    disk3s8
   8:                 DOS_FAT_12 DL7                     10.5 MB    disk3s9
   9:                 DOS_FAT_32 FILES                   423.2 MB   disk3s10
Peters-Mini:v2 peter$ 

For your reference you should list the partition table information using fdisk before you eject the SD-Card from the computer.

Peters-Mini:v2 peter$ sudo fdisk /dev/disk3
Password:
Disk: /dev/disk3        geometry: 983/16/63 [990976 sectors]
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: 01    0   1   1 - 1023 254  63 [        63 -      20480] DOS FAT-12  
 2: 01 1023 254  63 - 1023 254  63 [     20601 -      20480] DOS FAT-12  
 3: 01 1023 254  63 - 1023 254  63 [     41139 -      20480] DOS FAT-12  
 4: 05 1023 254  63 - 1023 254  63 [     61619 -     929308] Extended DOS
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: 01 1023 254  63 - 1023 254  63 [     61677 -      20480] DOS FAT-12  
 2: 05 1023 254  63 - 1023 254  63 [     82157 -     908770] Extended DOS
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: 01 1023 254  63 - 1023 254  63 [     82215 -      20480] DOS FAT-12  
 2: 05 1023 254  63 - 1023 254  63 [    102695 -     888232] Extended DOS
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: 01 1023 254  63 - 1023 254  63 [    102753 -      20480] DOS FAT-12  
 2: 05 1023 254  63 - 1023 254  63 [    123233 -     867694] Extended DOS
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: 01 1023 254  63 - 1023 254  63 [    123291 -      20480] DOS FAT-12  
 2: 05 1023 254  63 - 1023 254  63 [    143771 -     847156] Extended DOS
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: 01 1023 254  63 - 1023 254  63 [    143829 -      20480] DOS FAT-12  
 2: 05 1023 254  63 - 1023 254  63 [    164309 -     826618] Extended DOS
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: 0B 1023 254  63 - 1023 254  63 [    164367 -     826560] Win95 FAT-32
 2: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
Peters-Mini:v2 peter$ diskutil eject /dev/disk3
Disk /dev/disk3 ejected
Peters-Mini:v2 peter$ 

Next you insert the newly formatted SD-Card into the RLV12 Emulator. You need to connect via a terminal emulation to the RLV12 Emulator using a USB to TTL-Serial adapter. The default settings for the serial port are 115200baud, 8 bits per character no parity and one stop-bit. Make sure you get a proper > prompt.

>
SD Card inserted 
 -> automount
Set SPI Mode:01 Counts:01
Interface Condition Read:0x0580FF8000
Initialise Card RC:0x00, # of tries:0x37
Operation Condition Reg.:0x0580FF8000FF SD_Status:0x05
Set Block Length RC:00

Primary Extended Partition............:0000F0B3
Next Extended Partition Startsector...:0000F0B3
Next Extended Partition Startsector...:000140ED
Next Extended Partition Startsector...:00019127
Next Extended Partition Startsector...:0001E161
Next Extended Partition Startsector...:0002319B
Next Extended Partition Startsector...:000281D5
Status................................:03
Partition start.......................:0002820F
Sectors before this partition.........:0002820F
Number of FATs........................:02
Sectors per FAT.......................:000000CA
Sectors per cluster...................:10
Bytes per sector......................:0200
Reserved sectors......................:0001
1st FAT starts at sector..............:00028210
Data starts at sector.................:000283C4
FAT16 Volume with root dir sectors....:20
The root dir starts at sector.........:000283A4
 Success!

The RLV12 Emulator will list the partitions found. You can verify that you can read the SD-Card by using the DIR command. This should display the root directory of the first MS-DOS partition.

>dir
Show Dir:0x00000000

A    C:0000  <Volume>     FILES        
  H  C:0002  <DIR>        SPOTLI~1     .Spotlight-V100
  H  C:000B  <DIR>        FSEVEN~1     .fseventsd

>

Starting with Version 2.2 of the firmware, partitions can be changed individually using a new command in the CLI. This firmware will also list partitions of type MS-DOS FAT12 as a valid parition if it is of the exact size of a RL01/02 disk cartridge. It will however be marked as idle. A new command activate has been added that will change the partition type of MS-DOS FAT 12 to Linux. Note in the example above the first 5 partitions have already been activated and are attached to the first 4 units. The 5th partition is not attached and the next three partitions are marked as idle.

>show part
Partition 01 (pcb:0x2FF2) starting at sector 0x0000003F MBR at 0x00000000 is attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 02 (pcb:0x2FE2) starting at sector 0x0000285C MBR at 0x00000000 is attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 03 (pcb:0x2FD2) starting at sector 0x00005079 MBR at 0x00000000 is attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 04 (pcb:0x2FC2) starting at sector 0x00007896 MBR at 0x00007879 is attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 05 (pcb:0x2FB2) starting at sector 0x0000A0B3 MBR at 0x0000A096 is not attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 06 (pcb:0x2FA2) starting at sector 0x0000C8D0 MBR at 0x0000C8B3 is idle offset 0x01BE
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 07 (pcb:0x2F92) starting at sector 0x0000F0ED MBR at 0x0000F0D0 is idle offset 0x01BE
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 08 (pcb:0x2F82) starting at sector 0x0001190A MBR at 0x000118ED is idle offset 0x01BE
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 43 (pcb:0x2F72) starting at sector 0x00014127 MBR at 0x0001410A is volume C:
  Label:"FILES      "

>activate part8

>show parti
Partition 01 (pcb:0x2FF2) starting at sector 0x0000003F MBR at 0x00000000 is attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 02 (pcb:0x2FE2) starting at sector 0x0000285C MBR at 0x00000000 is attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 03 (pcb:0x2FD2) starting at sector 0x00005079 MBR at 0x00000000 is attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 04 (pcb:0x2FC2) starting at sector 0x00007896 MBR at 0x00007879 is attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 05 (pcb:0x2FB2) starting at sector 0x0000A0B3 MBR at 0x0000A096 is not attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 06 (pcb:0x2FA2) starting at sector 0x0000C8D0 MBR at 0x0000C8B3 is idle offset 0x01BE
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 07 (pcb:0x2F92) starting at sector 0x0000F0ED MBR at 0x0000F0D0 is idle offset 0x01BE
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 08 (pcb:0x2F82) starting at sector 0x0001190A MBR at 0x000118ED is not attached
  Drive has 0x00002800 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0100 cylinders  
  Drive type/flags and name 0x00/0x00  RL01

Partition 43 (pcb:0x2F72) starting at sector 0x00014127 MBR at 0x0001410A is volume C:
  Label:"FILES      "

>activate part6

>activate part7

When you have activated all partitions you want you can re-insert the SD-Card into the computer, in my case all partitions have been activated now.

Peters-Mini:v2 peter$ diskutil list /dev/disk3
/dev/disk3 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *507.4 MB   disk3
   1:                      Linux                         10.5 MB    disk3s1
   2:                      Linux                         10.5 MB    disk3s2
   3:                      Linux                         10.5 MB    disk3s3
   4:                      Linux                         10.5 MB    disk3s5
   5:                      Linux                         10.5 MB    disk3s6
   6:                      Linux                         10.5 MB    disk3s7
   7:                      Linux                         10.5 MB    disk3s8
   8:                      Linux                         10.5 MB    disk3s9
   9:                 DOS_FAT_32 FILES                   423.2 MB   disk3s10
Peters-Mini:v2 peter$ 

Now you can copy your RL02 diskimages to the respective partition.

Peters-Mini:~ peter$ cd disksrsx/
Peters-Mini:disksrsx peter$ ls
NETGEN.dsk                      rl0hack11v2.dsk                 rsx11m46                        rsx11mp46toy.dsk                simh-rm05.ini
dlrt11v57.dsk                   rl0null.dsk                     rsx11m46.tpc                    rsx11mplus_4_6_bl87.dsk         sysgen42.dsk
du057.dsk                       rl1.dsk                         rsx11mbl26_3_2.rl01             rsx11mplus_4_6_bl87_dsk.zip     sysgenrsx11m
rd52_0-rt11v57.dsk              rm                              rsx11mbl26_3_2.rl01.bz2         rsx11mplus_4_6_hack11.dsk       usedrsx11mp.dsk
rd52new.dsk                     rm05.log                        rsx11mp46-blank.dsk             rt1153distr.dsk                 v57bld.dsk
rl0.dsk                         rm05b.log                       rsx11mp46-rl02pg.README         rt11v57.rd                      v57bldboot.dsk
rl02.dsk                        rm05c.log                       rsx11mp46-rl02pg.dsk            rt11v57dl4.dsk
rl057.dsk                       rm05d.log                       rsx11mp46-rl02pg.zip            rt56.dsk
rl0hack11v2-20180417.dsk        rp0.dsk                         rsx11mp46-rm05.dsk              rt56b.dsk
Peters-Mini:disksrsx peter$ sudo dd if=rsx11mplus_4_6_hack11.dsk of=/dev/disk3s1
Password:
dd: /dev/disk3s1: end of device
20481+0 records in
20480+0 records out
10485760 bytes transferred in 8.403989 secs (1247712 bytes/sec)
Peters-Mini:disksrsx peter$ sudo dd if=rt11v57dl4.dsk of=/dev/disk3s2
20480+0 records in
20480+0 records out
10485760 bytes transferred in 9.016126 secs (1163001 bytes/sec)
Peters-Mini:disksrsx peter$ diskutil eject /dev/disk3
Disk /dev/disk3 ejected
Peters-Mini:disksrsx peter$ 

Remove the SD-Card from your computer and insert it into the RLV12 Emulator

>
SD Card inserted 
 -> automount
Set SPI Mode:01 Counts:01
Interface Condition Read:0x0580FF8000
Initialise Card RC:0x00, # of tries:0x2A
Operation Condition Reg.:0x0580FF8000FF SD_Status:0x05
Set Block Length RC:00

New RL02 Volume Startsector...........:0000003F Unit:01
New RL02 Volume Startsector...........:00005079 Unit:02
New RL02 Volume Startsector...........:0000A0B3 Unit:03
Primary Extended Partition............:0000F0B3
Next Extended Partition Startsector...:0000F0B3
New RL02 Volume Startsector...........:0000F0ED Unit:04
Next Extended Partition Startsector...:000140ED
New RL02 Volume Startsector...........:00014127 Unit:05
Next Extended Partition Startsector...:00019127
New RL02 Volume Startsector...........:00019161 Unit:06
Next Extended Partition Startsector...:0001E161
New RL02 Volume Startsector...........:0001E19B Unit:07
Next Extended Partition Startsector...:0002319B
New RL02 Volume Startsector...........:000231D5 Unit:08
Next Extended Partition Startsector...:000281D5
Volume address 0x0160, PCB address 0x2FF6, Type 0x01, Status 0x03, Start Sector 0x0000003F
Volume address 0x0170, PCB address 0x2FEA, Type 0x01, Status 0x03, Start Sector 0x00005079
Volume address 0x0180, PCB address 0x2FDE, Type 0x01, Status 0x03, Start Sector 0x0000A0B3
Volume address 0x0190, PCB address 0x2FD2, Type 0x01, Status 0x03, Start Sector 0x0000F0ED
Status................................:03
Partition start.......................:0002820F
Sectors before this partition.........:0002820F
Number of FATs........................:02
Sectors per FAT.......................:000000CA
Sectors per cluster...................:10
Bytes per sector......................:0200
Reserved sectors......................:0001
1st FAT starts at sector..............:00028210
Data starts at sector.................:000283C4
FAT16 Volume with root dir sectors....:20
The root dir starts at sector.........:000283A4
 Success!


>

You can now display the partition and unit status and rearrange the partitions to unit mapping.


>show part
Partition 01 (pcb:0x2FF6) starting at sector 0x0000003F is attached
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Partition 02 (pcb:0x2FEA) starting at sector 0x00005079 is attached
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Partition 03 (pcb:0x2FDE) starting at sector 0x0000A0B3 is attached
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Partition 04 (pcb:0x2FD2) starting at sector 0x0000F0ED is attached
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Partition 05 (pcb:0x2FC6) starting at sector 0x00014127 is not attached
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Partition 06 (pcb:0x2FBA) starting at sector 0x00019161 is not attached
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Partition 07 (pcb:0x2FAE) starting at sector 0x0001E19B is not attached
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Partition 08 (pcb:0x2FA2) starting at sector 0x000231D5 is not attached
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02


>show unit
Unit 0 (0x0160) is attached to partition 01 (0x2FF6) starting at sector 0x0000003F
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Unit 1 (0x0170) is attached to partition 02 (0x2FEA) starting at sector 0x00005079
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Unit 2 (0x0180) is attached to partition 03 (0x2FDE) starting at sector 0x0000A0B3
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Unit 3 (0x0190) is attached to partition 04 (0x2FD2) starting at sector 0x0000F0ED
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02


>

Now you can attach a unit to any of the available partitions. Make sure you first detach an attached unit.

>det rl3

>attach rl3 part6

>
>
>show unit
Unit 0 (0x0160) is attached to partition 01 (0x2FF6) starting at sector 0x0000003F
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Unit 1 (0x0170) is attached to partition 02 (0x2FEA) starting at sector 0x00005079
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Unit 2 (0x0180) is attached to partition 03 (0x2FDE) starting at sector 0x0000A0B3
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02

Unit 3 (0x0190) is attached to partition 06 (0x2FBA) starting at sector 0x00019161
  Drive has 0x00005000 blocks has 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders 
  Drive type/flags and name 0x01/0x00  RL02


>

Here you can see another session where a unit is mapped to a disk image and a partition is remapped

>det rl3

>det rl0

>att rl0 /diskimages/rt11v57dl4.dsk
/diskimages/rt11v57dl4.dsk
  Fragments of file
   Size:00005000 Start:000640F0

>att rl3 par1

>show un
Unit 0 (0x0E60) is attached to file (0x2F54) /diskimages/rt11v57dl4.dsk
  Fragments of file
   Size:00005000 Start:000640F0
  Drive has 0x00005000 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders  
  Drive type/flags and name 0x01/0x00  RL02

Unit 1 (0x0E70) is attached to partition 02 (0x2FE2) starting at sector 0x00005003
  Drive has 0x00005000 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders  
  Drive type/flags and name 0x01/0x00  RL02

Unit 2 (0x0E80) is attached to partition 03 (0x2FD2) starting at sector 0x0000A004
  Drive has 0x00005000 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders  
  Drive type/flags and name 0x01/0x00  RL02

Unit 3 (0x0E90) is attached to partition 01 (0x2FF2) starting at sector 0x00000002
  Drive has 0x00005000 blocks, 0x28 sectors/track, 0x02 tracks/cylinder and 0x0200 cylinders  
  Drive type/flags and name 0x01/0x00  RL02


>

Another new command is initialize this command is not currently fully implemented but it’s intention is to write a standard bad sector file to the last track of the volume in order to support operating system that expect an existing bad sector file like RT-11. For the time being this command is only supported on partitions not on disk image files.

FDISK

As a reference I have also implemented a simple version of the fdisk command on the RLV12 emulator

>fdisk
Sector: 0x00000000, Signature: 0xAA55 
         Starting       Ending
#: id  cyl  hd sec -  cyl  hd sec [     start -       size] 
------------------------------------------------------------------------ 
1: 83 1023 254  63 - 1023 254  63 [0x00000002 - 0x00005000] Linux files
2: 83 1023 254  63 - 1023 254  63 [0x00005003 - 0x00005000] Linux files
3: 83 1023 254  63 - 1023 254  63 [0x0000A004 - 0x00005000] Linux files
4: 05 1023 254  63 - 1023 254  63 [0x0000F004 - 0x00EBEFFC] Extended DOS 
Sector: 0x0000F004, Signature: 0xAA55 
         Starting       Ending
#: id  cyl  hd sec -  cyl  hd sec [     start -       size] 
------------------------------------------------------------------------ 
1: 83 1023 254  63 - 1023 254  63 [0x0000F005 - 0x00005000] Linux files
2: 05 1023 254  63 - 1023 254  63 [0x00014005 - 0x00EB9FFB] Extended DOS 
3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
4: 00    0   0   0 -    0   0   0 [         0 -          0] unused
Sector: 0x00014005, Signature: 0xAA55 
         Starting       Ending
#: id  cyl  hd sec -  cyl  hd sec [     start -       size] 
------------------------------------------------------------------------ 
1: 83 1023 254  63 - 1023 254  63 [0x00014006 - 0x00005000] Linux files
2: 05 1023 254  63 - 1023 254  63 [0x00019006 - 0x00EB4FFA] Extended DOS 
3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
4: 00    0   0   0 -    0   0   0 [         0 -          0] unused
Sector: 0x00019006, Signature: 0xAA55 
         Starting       Ending
#: id  cyl  hd sec -  cyl  hd sec [     start -       size] 
------------------------------------------------------------------------ 
1: 83 1023 254  63 - 1023 254  63 [0x00019007 - 0x00005000] Linux files
2: 05 1023 254  63 - 1023 254  63 [0x0001E007 - 0x00EAFFF9] Extended DOS 
3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
4: 00    0   0   0 -    0   0   0 [         0 -          0] unused
Sector: 0x0001E007, Signature: 0xAA55 
         Starting       Ending
#: id  cyl  hd sec -  cyl  hd sec [     start -       size] 
------------------------------------------------------------------------ 
1: 83 1023 254  63 - 1023 254  63 [0x0001E008 - 0x00005000] Linux files
2: 05 1023 254  63 - 1023 254  63 [0x00023008 - 0x00EAAFF8] Extended DOS 
3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
4: 00    0   0   0 -    0   0   0 [         0 -          0] unused
Sector: 0x00023008, Signature: 0xAA55 
         Starting       Ending
#: id  cyl  hd sec -  cyl  hd sec [     start -       size] 
------------------------------------------------------------------------ 
1: 83 1023 254  63 - 1023 254  63 [0x00023009 - 0x00005000] Linux files
2: 05 1023 254  63 - 1023 254  63 [0x00028009 - 0x00EA5FF7] Extended DOS 
3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
4: 00    0   0   0 -    0   0   0 [         0 -          0] unused
Sector: 0x00028009, Signature: 0xAA55 
         Starting       Ending
#: id  cyl  hd sec -  cyl  hd sec [     start -       size] 
------------------------------------------------------------------------ 
1: 0B 1023 254  63 - 1023 254  63 [0x0002800A - 0x00EA5FF6] Win95 FAT-32 
2: 00    0   0   0 -    0   0   0 [         0 -          0] unused
3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
4: 00    0   0   0 -    0   0   0 [         0 -          0] unused

>