Well, it's not looking good, the ram I added is removed and its still dead.
Few more things to try, but it may become another donor board
C103253 REV.5 - STFM 1MB Upgrade
- rubber_jonnie
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Re: C103253 REV.5 - STFM 1MB Upgrade
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: C103253 REV.5 - STFM 1MB Upgrade
Check out the 74ls373 and 244s. I've had a few of those die lately
If it ain't broke, test it to Destruction.
- rubber_jonnie
- Site Admin
- Posts: 10639
- Joined: Thu Aug 17, 2017 7:40 pm
- Location: Essex
- Contact:
Re: C103253 REV.5 - STFM 1MB Upgrade
Thanks Phil, I've found out it has a dead GLUE for starters, but if I'm totally truthful I'm not too broken up over it, and I've decided that it's going to be my Mongrel donor.
Oddly, I seem to have about 5 spare MMUs,which is annoying, so another trip to feed Harry.
It has always been a bit ropey, and TBH I still want to gey my ALPHA board running, so using it as a donor does make a lot of sense and will save some money.
It does only leave me with one testing board, but I can live with that.
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...