Few more things to try, but it may become another donor board
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Thanks :)
C103253 REV.5 - STFM 1MB Upgrade
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rubber_jonnie
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- Posts: 15084
- Joined: Thu Aug 17, 2017 7:40 pm
- Location: Essex
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Re: C103253 REV.5 - STFM 1MB Upgrade
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
Few more things to try, but it may become another donor board
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.
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rubber_jonnie
- Site Admin
- Posts: 15084
- 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.PhilC wrote: Fri Nov 29, 2019 5:48 pm Check out the 74ls373 and 244s. I've had a few of those die lately
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...