Tried other floppy format (3.5 HD and 5.25 DD) and interestingly PCem read the TOC but doing anything with floppy result in garbage. Physical characteristics of disks are : 3.5 HD floppy = 82 tracks, 21 sectors/tracks, 2 sides, 1.745.408 bytes and 5.25 DD floppy = 82 tracks, 10 sectors/tracks, 2 sid...

OK. The specs on real hardware are : 82 tracks, 18 sectors/tracks, 2 sides, 512 bytes. Total space : 1494528 bytes. Total : 1511424 bytes. I could not find tracks and sectors details in winimage
It's the max that fdformat can do on 5.25 floppy.

Winimage reports : 1.494.528 bytes in 2919 clusters for a 5.25 HD floppy. I will check on real hardware to report sectors/tracks

Fd-format was : " A DOS tool written in Pascal by Christoph H. Hochstätter that allows users to format floppy disks to a higher than usual density, enabling the user to store up to 300 kilobytes more data on a normal high density 3.5" floppy disk" (wikipedia). It is not related with l...

Ruben_balea provide a fix for this : put HIMEM.SYS /MACHINE:1 and XMS is enabled.

Hello, I made raw images of some 5.25 fd-formatted (1.6 version) floppies I own. Theses images are readable with wimage but they won't work in PCem, wether or not the BPB is enabled. pclog says : "BPB reports 2 sides and 512 bytes per sector bit_rate_300=500 bitcell_period_300=4000 img_load 1 0...

Thanks for the fix Sarah.

I reproduce this and can confirm that the message "Floppy disk(s) fail.." is very specific in setting a 720k drive in BIOS.

Hello,

it seems that since commit 469ea50, IBM AT is broken. I put back the cycle_period to 100 and everything is working.

PCem doesn't have a MCGA card because they don't exit (as a standalone card). Only came onboard with certain PS/2 models You're right about not being compatible with EGA Indeed, MCGA chip came with entry level PS/2 (earlier 8525 ans 8530) but can't pcem emulate onboard video chipsets ? Finding the ...

Great job on PS/2 emulation Sarah. About MCGA, i think PCem does not have such a card. If I remember correctly MCGA used 64 Kb of VRAM and was incompatible with EGA mode :o Speaking of PS/2, later models had IBM 386SLC and 486SLC processors (model 40, 55 ..). They were not the same as Cyrix similarl...