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ROM Dump of Tandy 1000SL BIOS needed

westveld

Experienced Member
Joined
Dec 31, 2009
Messages
191
Location
Reed City, MI
Hello all,

I'm working on a Tandy 1000SL board that's missing an ODD bits ROM - SU4 / HU2
My board is fit with the SU pinout ROM sockets.

My SU3 / HU1 ROM does seem to appear OK, I have a dump of that if it's needed.

Thanks much!

Matt
 
If your still looking for 1000SL bios let me know I'll dig mine out. And see what I can do.
 
Dumb Question. how did you read your other ROM chip?
I got my system out but looking at the chip im not able to determine what type it is to set my ROM reader (TL866+)
 
Dumb Question. how did you read your other ROM chip?
I got my system out but looking at the chip im not able to determine what type it is to set my ROM reader (TL866+)
The service manual says there are 2 layouts used - check your board to see which one it uses.

I don't remember the ROM type I used on the reader - I'll have to check my notes when I get back to the shop.

Mine uses the SU layout for the Sharp ROM

See:
http://www.oldskool.org/guides/tvdog/documents.html
http://ftp.oldskool.org/pub/tvdog/tandy1000/documents/sltech.zip
PDF Page 71 & 79 in sltech.pdf

This is the SU type - for HU the sockets would be in the holes 0.1in to the right

Tandy 1000 SL ROM SU HU.jpg
 
https://github.com/86Box/roms - has SL/2 ROM dumps, which should work in the SL.
Those seem to have a different layout than my SU3 ROM dump.

Mine has the date string at 3FFF0 and EA jmp at 3FFF8

The HU1 has them at 1FFF0 and 1FFF8

Maybe the banking is different on the SL/2 or 86Box needs it that way.

Easy enough to fix to try on my SL, just noting it here for someone in the future
 
Dumb Question. how did you read your other ROM chip?
I got my system out but looking at the chip im not able to determine what type it is to set my ROM reader (TL866+)
For SU pinout ROM:
On my T56 with Xgpro v12.50 I chose AM27C020
I had to uncheck Pin Detect and Check ID, but it appears to have read it without error.

For HU pinout you may need an adapter

If I read the fuzzy schematic from sltech correctly here are the pinouts:

Tandy1000SL-ROMs-Pinout.jpg
 
Both SU3 and SU4 Read as AM27C020 via TL866+

Hope this helps
 

Attachments

  • 1000SL(su4).zip
    196.6 KB · Views: 15
  • 1000SL(su3).zip
    197 KB · Views: 15
  • 1000SL(SU3).jpg
    1000SL(SU3).jpg
    779.6 KB · Views: 4
  • 1000SL(SU4).jpg
    1000SL(SU4).jpg
    894.7 KB · Views: 4
Last edited:
Woo Hoo!
Those ROMs from 86Box worked!
Had to flip the first half with the last half on each file.
Wrote them to some SST39SF020A parallel flash chip, put them in SU3 and SU4, and good to go.
Of course, it's just a bare board, no drives, keyboard or anything, so can't test further

20230304_224212482_iOS.jpg
 
Scottmm78 posted a dump for BIOS ROM version 01.04.00 type 32 with English DeskMate 03.00.00.
My Tandy 1000 SL has Sharp ROMs with BIOS ROM version 01.04.01 type 40. I could upload those if somebody needs them.
tandy-boot-photo.png

This type isn't mentioned in the 'Tech Notes & Jumper Guide For The 1000's Vol. 1'. Many others probably exist for different languages. From the guide:
Version Comments
01.04.00 First ROM release. Sharp ROM Chips version 1, type 32
01.04.00 Second ROM release. Sharp ROM 2, type 33 or is a
01.04.01 Sharp ROM 4, type 41
01.04.02 Sharp ROM 6, type 47
02.00.01 Hitachi ROM 2, type 33. Announced version that contains Deskmate 3.5 may not be available. Noted here for informational purposes.

It has DeskMate 03.01.00 in ROM with English, French and Dutch language support. The DeskMate parts on my 5.25" floppies are Dutch only. The ROM disk also has some additional files for internationalization support:
Code:
aaaaaaaa.aaa   26236 1988-08-05 13:00
aaaaaaaa.aaa    6408 1988-08-05 13:00
aaaaaaaa.aaa   12081 1988-08-05 13:00
aaaaaaaa.aaa    9153 1988-08-05 13:00
ibmbio.com     22330 1988-08-05 13:00
ibmdos.com     30128 1988-08-05 13:00
v                  2 1988-08-05 13:00
autoexec.bat      20 1988-08-05 13:00
automem.comm    3304 1988-08-05 13:00
command.com    25612 1988-08-05 13:00
country.sys    11254 1988-08-05 13:00
desk.com          77 1988-08-05 13:00
desk.hid      107552 1988-08-05 13:00
diskcopy.com    6264 1988-08-05 13:00
drvr8530.mod    6652 1988-08-05 13:00
format.comom   11681 1988-08-05 13:00
keyb.com        9041 1988-08-05 13:00
keyboard.sys   19735 1988-08-05 13:00
netbios.mod     8092 1988-08-05 13:00
netload.com      485 1988-08-05 13:00
restart.com      472 1988-08-05 13:00
------------  ------ ----------------
21 files      316579
 
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