:cheer: :cheer: :cheer: An unexpected but good result nonetheless.
I'll have to send you a ram and floppy pcb soon then.
Another Egyptian Enterprise 64
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PhilC
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Re: Another Egyptian Enterprise 64
If it ain't broke, test it to Destruction.
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rubber_jonnie
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Re: Another Egyptian Enterprise 64
Bit of a shocker for sure. Will likely order a membrane this afternoon.PhilC wrote: 06 Aug 2026 12:15 :cheer: :cheer: :cheer: An unexpected but good result nonetheless.
I'll have to send you a ram and floppy pcb soon then.
Appreciate the offer of the PCB 👍
Am I correct in saying that to run BASIC I need a cartridge for that?
What's weird is that the second replacement tr2 worked just fine, I can only assume that something that was shorting was dislodged during the replacement?
Not overly concerned since it works 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...
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...
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stephen_usher
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Re: Another Egyptian Enterprise 64
A better replacement for the BASIC cartridge is replacing the ROM with a WD27C512, a bodge wire and the newer ROM version with BASIC baked in.
The best way to get these is to install the "ep128emu" emulator and find the ROM images.
The best way to get these is to install the "ep128emu" emulator and find the ROM images.
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.
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.
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PhilC
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Re: Another Egyptian Enterprise 64
That's the rom upgrade that I did, really simple to do and leaves the cartridge port open.
If it ain't broke, test it to Destruction.
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stephen_usher
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Re: Another Egyptian Enterprise 64
Indeed. It just needs pin 1 of the 27C512 lifting and a bodge wire soldered on to it and pin 17 of U6.
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.
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.
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rubber_jonnie
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Re: Another Egyptian Enterprise 64
Hmm interesting :)
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...
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rubber_jonnie
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Re: Another Egyptian Enterprise 64
So a bit more tinkering and the membrane is mostly working, but ultimately shot, so I have ordered a replacement.
A few more bits done:
Heatsink removed and cleaned and a new power socket fitted since the old one was a bit erratic.
I also reassembled the heatsink with a little heatsink compound. No more crud in the fins either, so better all round.
You can also see the modulator is off so I can clean the can and also get any crud from beneath it. I'm considering, depending on how well the can cleans up, converting it to composite. Will see how that goes.
Mainboard is in need of more cleaning, but I'm wary of going too mad since it works!!!
Also fixed the broken off PCB standoff:
A few more bits done:
Heatsink removed and cleaned and a new power socket fitted since the old one was a bit erratic.
I also reassembled the heatsink with a little heatsink compound. No more crud in the fins either, so better all round.
You can also see the modulator is off so I can clean the can and also get any crud from beneath it. I'm considering, depending on how well the can cleans up, converting it to composite. Will see how that goes.
Mainboard is in need of more cleaning, but I'm wary of going too mad since it works!!!
Also fixed the broken off PCB standoff:
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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...
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stephen_usher
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- Joined: 13 Nov 2017 19:19
- Location: Oxford, UK.
Re: Another Egyptian Enterprise 64
Why composite video when there's good ol' analogue RGB and stereo audio (needs a bit of amplification) on the monitor edge connector?
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.
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.
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