I've burnt TOS 2.06 into two 27C010 EPROMs, put them back into my STe (with the correct EPROM jumper settings) and all appears to work fine.
But if I run the ROM test in the Exxos diagnostic cartridge I get a CRC error.
Is this "normal" or have I made a mistake somewhere along the way?
Can all registered uses please login, even just for a few minutes..
It helps build a picture where our "good traffic" is coming from..
Thanks :)
It helps build a picture where our "good traffic" is coming from..
Thanks :)
TOS 2.06 CRC error after burning (Exxos diagnostic cart)
TOS 2.06 CRC error after burning (Exxos diagnostic cart)
STe | MonSTer with dual IDE-CF memory card adapter | NEC Multisync 1990SXi | ST_ESSC | RSVE | Link '97 | Sony HD floppy drive/AJAX controller | Exxos HD floppy module | Battery-backed Ricoh realtime clock module | Discovery cartridge | C-Lab Unitor-2 | C-Lab Export | C-Lab Combiner | C-Lab Steady Eye | C-Lab Human Touch | Unicorn USB
Are you a good person?
Living Waters
- rubber_jonnie
- Site Admin

- Posts: 15200
- Joined: Thu Aug 17, 2017 7:40 pm
- Location: Essex
- Contact:
Re: TOS 2.06 CRC error after burning (Exxos diagnostic cart)
I can't remember the reason why, but IIRC this is normal.Pacman wrote: Tue Dec 03, 2024 2:54 pm I've burnt TOS 2.06 into two 27C010 EPROMs, put them back into my STe (with the correct EPROM jumper settings) and all appears to work fine.
But if I run the ROM test in the Exxos diagnostic cartridge I get a CRC error.
Is this "normal" or have I made a mistake somewhere along the way?
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Re: TOS 2.06 CRC error after burning (Exxos diagnostic cart)
Strange, but I think you're right according to this posting, though I'm not getting any errors while booting.rubber_jonnie wrote: Tue Dec 03, 2024 3:22 pm I can't remember the reason why, but IIRC this is normal.
Prior to burning the two EPROMs I used Ppera's ROMsplit program to split the single TOS file into two parts (high and low). I'm almost sure I clicked on its "Fix CRC for TOS 2.06" button, so either I didn't or I'm getting error messages in the diagnostic software regardless.
STe | MonSTer with dual IDE-CF memory card adapter | NEC Multisync 1990SXi | ST_ESSC | RSVE | Link '97 | Sony HD floppy drive/AJAX controller | Exxos HD floppy module | Battery-backed Ricoh realtime clock module | Discovery cartridge | C-Lab Unitor-2 | C-Lab Export | C-Lab Combiner | C-Lab Steady Eye | C-Lab Human Touch | Unicorn USB
Are you a good person?
Living Waters
Re: TOS 2.06 CRC error after burning (Exxos diagnostic cart)
Does the diagnostic cart know about TOS2.06? If not, then you'd probably expect this.
BW
BW
DFB1 Open source 50MHz 030 and TT-RAM accelerator for the Falcon
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
Re: TOS 2.06 CRC error after burning (Exxos diagnostic cart)
Good point! I should pop my original TOS 1.62 ROMs back in (and adjust the 3 ROM-jumpers accordingly) to check, but that could probably explain the errors I'm getting.Badwolf wrote: Wed Dec 04, 2024 12:37 pm Does the diagnostic cart know about TOS2.06? If not, then you'd probably expect this.
I suppose if I had really done something incorrectly during the splitting and burning of the new TOS image files into the EPROMs I wouldn't be able to boot and/or I'd get some error messages while booting (like the poster in that other thread I referred to did).
STe | MonSTer with dual IDE-CF memory card adapter | NEC Multisync 1990SXi | ST_ESSC | RSVE | Link '97 | Sony HD floppy drive/AJAX controller | Exxos HD floppy module | Battery-backed Ricoh realtime clock module | Discovery cartridge | C-Lab Unitor-2 | C-Lab Export | C-Lab Combiner | C-Lab Steady Eye | C-Lab Human Touch | Unicorn USB
Are you a good person?
Living Waters
