Sanyo MBC-1000/1100/1150 - DSDD 48 tpi 5.25"
the interface card for the EFD860F allowed 2 additional 8" external drives
Sanyo MBC-1200/1250 - DSDD 96 tpi 5.25", 80 tracks (two 4.0 MHz Z80A CPUs and 640 kB disk drives, high resolution graphics)
The MBC-200, MBC-225 (and probably also the MBC-250) were equivalent models for the western markets.
Also the MBC-1160 had the same disk format, I don't know if it had the same graphics capability.
Sanyo MBC-2000 (8085 CPU) - SSDD 96 tpi 5.25"
Sanyo MBC-3000, 8" - 26 sectors/track
(A good timeline is here: https://moainet.org/sadoru/pc/sanyo.html )
I could get cpmtools correctly edit the existing system disk images for the first (EDIT: three) machine groups:
Code: Select all
# SAN1 Sanyo MBC-1000/1100/1150 - DSDD 48 tpi 5.25" - 256 x 16
diskdef san1
seclen 256
tracks 80
sectrk 16
blocksize 2048
maxdir 64
skew 3
boottrk 2
os 2.2
end
# Sanyo MBC-1200/1250 - DSDD 96 tpi 5.25" - 256 x 16
# Probably valid also for MBC-250/225/200
# 256 byte sector, 1-16, 1:1, 96 tpi
diskdef san2
seclen 256
# tracks 160
sectrk 16
blocksize 4096
maxdir 128
skew 3
tracks 80
heads 2
sides outback
boottrk 4
os 2.2
end
# Sanyo MBC-2000 - SSDD 96 tpi 5.25" - 256 x 16
diskdef san3
seclen 256
tracks 80
sectrk 16
blocksize 2048
maxdir 64
skew 5
boottrk 4
os 2.2
end
By the way I'm not sure the current appmake implementation is able to generate a a valid IMD image for the MBC-1200 series, as you can see I tricked CPMTOOLS by suggesting to work on a single side disk image.
Reasonably, MAME complains when it meets a 160 tracks disk. Sadly it is not currently configured to accept a RAW format on the MBC-200 system type.
I'm going to test the RAW generated image by shuffling the sectors with IMD and see if MAME likes it in that way.
I noticed already that MAME seems to be reluctant to seek the second drive. Accessing to the virtual units E: and F: seems to help.
Moreover, it looks like a 40 tracks format is allowed in read-ony mode (CP/M sometimes fires out a warning about it).
In Australia it was part of a business line, iirc IMS.