Another Disk Operating System for OSI Superboard II / C1P

[Mark]

So my initial conversion problems were due to a file specification interpretation misunderstanding. Although I knew HxC HFE files interleave data blocks for double sided disks, they also interleave empty data when using single sided disks for some reason. Anyway Thomas pointed that out, and there are very few HFE files out there made for single sided disks to compare to!

Now there is an updated OSIHFE that understands Ye-OSI DOS disks. You can convert from HFE images to OSI dump and back as well as get directories. This doesn't help with writing to OSI systems without a Gotek drive, but it's a start.

Code: Select all

C:\TEMP\YE-DOS>OSIHFE -d YE54_DEMO_35.hfe

Warning: HFE file encoding (02) is not "UNKNOWN_ENCODING"

YE-OSI DOS 3.54
SECTORS FREE 125

NAME    LENGTH   TYPE
DOSSUP    10   COM R a  $7040-79ff
FORMAT     6   BAS RWa  $0300-083a
GRDEMO     4   BAS RWa  $0300-0641
CAGE      11   BAS RWa  $0300-0d40
PINBAL    11   BAS RWa  $0300-0daf
OSIDEM    13   BAS RWa  $0300-0f0c
SPACEW    12   BAS RWa  $0300-0ed0
SCRAMB    26   COM RWa  $0400-1dff
PLASMA     4   COM RWa  $0310-06ff
INVADE    27   BAS RWa  $0300-1dff
ASM65     15   COM RWa  $0400-12ff

C:\TEMP\YE-DOS>OSIHFE -i YE54_DEMO_35.hfe

HFEFile: 35 tracks, 1 sides, bitrate:250, Encoding: IBM_FM
Warning: HFE file encoding (02) is not "UNKNOWN_ENCODING"
File type YE-Dos 5.25"

And as a teaser, you can see it's already working in my WinOSI!

WinOSI disk select

yedos-winosi.jpg (100.01 KiB) Viewed 2884 times

(YeDOS HFE files will not work in older WinOSI versions as it is not looking for 8N1 stream data, only 8E1, so it comes in scrambled)

Attached is the updated OSIHFE. It now converts 35 track HFE to 40 track OSI Dump for the emulator etc., but doesn't convert 40 track OSI dump to 35 track HFE (it stays 40 track currently). Since I don't have a C1P to try this on, please let me know if a conversion from YEDOS OSI dump IMG to HFE works on real hardware. Also no support for 80 track YEDOS images... Also it's lacking error checking, so garbage in->garbage out!
Now I need to update the 6502 side...

I'm sure I've forgotten something, but it's a start.
Oh, the incorrect bitrate for non-OS65D 5.25" disk types HFE conversions has finally been corrected too. So no more patching by hand...
Also it recognizes those 8" images written for 5.25" controllers as an 8" disk correctly.
-Mark

[davisgw]

Mark,
Good Job!! I converted both posted original YE-OSI_BOOT_XV54_40.img and YE-OSI_DEMO_XV54_40.img to .hfe files and ran them on the GOTEK. They both booted and all commands and BASIC programs I tried ran as expected. And both were 876 KB.
From 5/28 thru 6/13 I will be unable run any tests...

davisgw