-
Anybody fancy coding this?blah de blah de blah Please ignore, poting error.
These days, use flash - don't bother with eprom. You can replace the ROM by making an external board that connects to the edge connector, and nails ROMCS high just like ZX Interface 2, so that the on-board ROM never gets selected. Simple decoding logic ... -
What's the most probable......cause for this on a grey +2? (z80 is excluded) [url]http://img376.imageshack.us/img376/8087/plus2hk9.jpg[/url]
... through the Spectrum 128K +2 schematic.
It uses 4 ... -
What's the most probable......cause for this on a grey +2? (z80 is excluded) [url]http://img376.imageshack.us/img376/8087/plus2hk9.jpg[/url]
... through the Spectrum 128K +2 schematic.
It uses 4 ... -
What's the most probable......cause for this on a grey +2? (z80 is excluded) [url]http://img376.imageshack.us/img376/8087/plus2hk9.jpg[/url]
... through the Spectrum 128K +2 schematic.
It uses 4 ... -
Hard drive crash - any help?My HD has crashed, the OS is Windows 2000 Server. Right at the start of the boot process it says "Error loading operating system". Running the reco…
... .tzx files made by myself, Schematic's + PCB layouts/cad project ... -
Hard drive crash - any help?My HD has crashed, the OS is Windows 2000 Server. Right at the start of the boot process it says "Error loading operating system". Running the reco…
... .tzx files made by myself, Schematic's + PCB layouts/cad project ... -
Dead +2B, help required...It was bought defective on ebay. It came with two faults: a "dead" power supply (it was the fuse) and a faulty main unit. The power supply is now re…
... haven't looked at the schematic) into the search and you ... -
Amstrad +2 Diagnostic BoardCan anybody help I wish to buy the Diagnostic Board that connects to the I/O strip at the back of the Amstrad ZX Spectrum +2. Many thanks Martin
... night I scribbled out a schematic on the back of an ... -
5v Transformer.I've got a 5v 3A transformer, would this be ok to use with two 3.5 inch floppy drives?
... I'll draw up a schematic and email it to you ... -
Dead +2B, help required...It was bought defective on ebay. It came with two faults: a "dead" power supply (it was the fuse) and a faulty main unit. The power supply is now re…
... haven't looked at the schematic) into the search and you ... -
5v Transformer.I've got a 5v 3A transformer, would this be ok to use with two 3.5 inch floppy drives?
I have emailed a schematic/diagram for you to look at. I hope it's clear, but I'm not good at art :) -
It's fitting...... that in the very month that the 25th anniversary of the Speccy falls on, I'm just finishing up making my first ever Spectrum peripheral. It's a …
... ---/__/
[/code]In the schematic above, the XOR/XNOR gates ... [/B]. The two in the schematic, [B]Ax[/B] and [B ... -
"Lost" 48K expansionToday I dug up my Speccy after more than 10yrs of inactivity. I bought it as a 16K in 1983, than I had expanded to 48K and never had problem. Until t…
... need to look at the schematic to determine which chip holds ... -
Spectrum 48K ROMHi Can anybody help I have an Issue 6a Circuit Board which has a faulty ROM Chip. Is it possible to program a ROM Chip with the 48K ROM and fit it as…
I'm looking at the schematic. It seems related to
... that this piece of the schematic do the RAM refresh, but ... -
Spectrum 48K ROMHi Can anybody help I have an Issue 6a Circuit Board which has a faulty ROM Chip. Is it possible to program a ROM Chip with the 48K ROM and fit it as…
... all.
Here is schematic of similar thing: external ROM ... -
Problem with my speccy 48+My machine boots up but apon booting it freezes and you can see feint grey horizontal 1 pixel lines going down the screen. Is this fixable at all?
... the machine (refer to the schematic for your particular motherboard to ... -
Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…
If you're making the interface's schematic and the ROM's code public for free, then count me in as well. I'll make one myself.
Thanks,
Marcelo. -
Arcadia - by ImagineArcadia, by imagine. I thought I'ld play this last night, but its pretty awful to control Anyone know whats with the random movement and occasional…
I enjoyed Alchemist (mainly the changing to the eagle (I was easily amused back then).
I thought Arcadia was as stated, a big pile of poopoo. Wasn't it Arcadia that brought Imagine early recognition too?...strange. -
Arcadia - by ImagineArcadia, by imagine. I thought I'ld play this last night, but its pretty awful to control Anyone know whats with the random movement and occasional…
... (mainly the changing to the eagle (I was easily amused back ... -
Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…
... 're making the interface's schematic and the ROM's code ... -
Harrier Attack II Help!Hi, We are making this game, Harrier Attack II, at Durell and are at last in the final testing stages. We now need about half a dozen serious tester…
... the PSX remake, 'Harrier Attack - Eagle One?'
I remember ... -
Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…
[QUOTE=zub;189166]
Was it an exact clone? I can see a reference to "Kempston Joystick" so perhaps not? :)[/QUOTE]
If you read the schematic you see there is no joystick port or expansion port. No need to read Russian for that ! ;) -
Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…
... 's extremely simple. It's schematic is even more simple. It ... -
Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…
... be generated from a usual schematic. In this case i would ... start from this Leningrad-1 schematic, with modified I/O space ... -
Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…
... be generated from a usual schematic. In this case i would ... start from this Leningrad-1 schematic, with modified I/O space ... -
TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …
... lot I have a cart schematic designed by Alvin Albrecht. The ... are long gone, but the schematic survives - I just need to ... -
TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …
... lot I have a cart schematic designed by Alvin Albrecht. The ... -
TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …
Could be this schematic... ;-)
[URL="http://gods69.com/tc.jpg"]schematic[/URL]
It may contain errors...:smile: (it seen OK to me...) -
TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …
[quote=Gods;190811]Could be this schematic... ;-)
[URL="http://gods69.club.fr/tc.jpg"]schematic[/URL]
It may contain errors...:smile: (it seen OK to me...)[/quote]
Great! Thanks :) -
Pics from my uncle's 48K SpeccyThis was built back in 1987 and it looks old now, but it brings back lots of good memories. [url]http://zxspectrum.zidev.com/zx/1987enclosure/HPIM16…
... if he still has any schematic diagrams etc for this machine ...
