Well wow. I ordered the 14529 yesterday and it's just arrived through the door!!! Very impressed with the speed of delivery indeed.
And, for all of you waiting to hear the result, it's now fixed Makes me wonder, that IC was already socketed, so did they know from the off that it was unreliable? Was the socket for an easy no sound fix? Or had it already been reworked for a dead one prior? Given the warranty seal from the factory was unbroken, I'd suspect it was that way from the off, just in case.
Probably never know, but will be the first place I look if the sound fails again.
I hadn't even begun to look at the RAM upgrade stuff!!!
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...
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
Yay! indeed. I never expected the IC to arrive the day after I ordered it
I also hooked the 'scope to TP 14 and the output pin of the cassette port, as I can't hear the cassette sound over audio anymore. It works just fine, I see the signal at both points
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...
OK, so it turns out Tandy were quite smart with the variant of Coco 1 that I have.
The RAM upgrade just requires 4 jumpers to be changed, 8 RAM chips (416's basically the same as a 4116) to be swapped, and the removal of 8 capacitors (C70 to C77).
First off, the jumpers change the socket behaviour and remove the -5v from pin 1, the 12v from pin 8 and move 5v from pin 9 to pin 8.
The caps are on what was pin 9, which used to be +5v, however it is now A7, meaning A7 is connected to GND via the caps, so the caps have to go leaving A7 unfettered.
Then it's just a case of dropping in 8 new 4164 RAM ICs and Robert is your relative, 64KB, of which about 31 KB is free for BASIC.
Next up I need to get the CocoSDC working. Not that it doesn't, it works with the Dragon 32 just fine, just doesn't work with the Coco.
For now.
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...
Have to say, the combination of the TRS-80 Coco and the Plustron 5" B&W TV really does give off a Fallout vibe:
IMG20240229093246.jpg (299.16 KiB) Viewed 2429 times
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...
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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...
My TSR-80 cart arrived this morning, the contacts are best described as awful:
IMG20240229105330.jpg (180.4 KiB) Viewed 2417 times
IMG20240229105318.jpg (98.03 KiB) Viewed 2417 times
Looking much better after a clean with a fibreglass pencil, IPA and contact cleaner.
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...
PhilC wrote: Thu Feb 29, 2024 11:56 am
I’m f you’ve got the PC version of fallout 3 or 4, I think the 3D models are easily accessible, should help with getting the labels made
LOL
Maybe I should make a PIP Boy as well
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...
Makes me wonder, that IC was already socketed, so did they know from the off that it was unreliable? Was the socket for an easy no sound fix? Or had it already been reworked for a dead one prior? Given the warranty seal from the factory was unbroken, I'd suspect it was that way from the off, just in case.
