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+2 Grey - low 128k sound volumeI'm trying to revive my old grey +2.... First problem was a faulty RF signal, so I bought a SCART cable from Retro Computer Shack on e-bay (it's the…
... from the AY-3-8912 chip is very low when compared ... -
Video generation using a CPUWe know it is possible to generate a video signal using a CPU, and this technique was often used on low-end computers in the early 1980's (for exampl…
... operating system, and some other chip can do the rest of ... -
How to check the whole memory on a +2 greyHi everybody!!! I suspect that i have a bad memory chip on my +2 Grey. Does anybody know if exist any utility to check the whole memory? Thanks a …
Hi everybody!!!
I suspect that i have a bad memory chip on my +2 Grey.
Does anybody know if exist any utility to check the whole memory?
Thanks a lot!!! -
+3 Stereo mod - soldering help neededI bought a few bits from Ben just recently, and yesterday I opened up the case of my +3 and tried to install the stereo mod. I got stuck quite early…
... pin header to the AY chip and wondering if anyone can ... -soldered leg of the AY chip, with soldering iron touching the ... the solder on the AY chip.
Should I switch ... 've not cooked the AY chip (and it still works :) ) but ... -
Issue 6A trouble[url=http://postimage.org/image/xp4rtmfp1/][img]http://s18.postimage.org/xp4rtmfp1/P040213_13_34_01.jpg[/img][/url] Only socketed chip is ULA which …
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Only socketed chip is ULA which ive swapped ... -
Currys IF+ECHO KEYBOARD+ORIGINAL TAPEHi! I'm looking for this, [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0008524[/url] Organ Master tape [url]http://www.worldofspectrum.org/…
... way to play the AY chip onboard with an external pianokeyboard ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... a problem.
-WD1772 chip, Eprom chip 27128, ram 6864, a bunch ... -
ZX mask ROM chips curiosityJust out of curiosity... what willl happen if we have a Hitachi ROM and the bridging onboard is on the N positions (for NEC)? While I was searching …
... for NEC rom but the chip (socketed) was replaced by a ... -
Designing a Modern 'Professional' low cost ZX Spectrum ??Hi, I'm looking at designing a low cost hight performance (20MHz) ZX Spectrum... in the mould of the original, but using modern-day components. The…
... )
AY-3-812 Sound Chip ?? perhaps
Keyboard PS ... -
maximum addressable RAM for a Z80 using bank switching?What is the maximum addressable RAM for a Z80 using bank switching? The Enterprise64 home computer could address up to 4MB, is this the limit for a …
... -bit Page Registers in Dave chip. The output from the selected ...
