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designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
how about i show you the old schematic? if i can find it -
Help with broken SpectrumHi There, Just received a ZX Spectrum computer. It's an issue 3B (48k version). When I power it up (9V centre pin -V) nothing happens. It's complete…
... a 4116 datasheet or 48K schematic for correct pins, they should ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
... that whole area of the schematic is riddled with errors, or ... the manual, and on the schematic the pins of the keypad ... should just redraw the entire schematic properly instead of trying to ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
... switch to using a proper schematic drawing tool instead of a ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
I agree with roko. Anyone who tinkers with their +3 will be grateful for an accurate schematic! (And I see you're doing it in gschem, you can even then generate a netlist for PCB so you can make your own +3 PCB if you really wanted to :-) :-) ) -
How do I make a ROM selector switch ?I would like to have a ROM switch for my good old Alesis HR-16 drum machine, so I can switch between 2 sets of ROMs to get different sets of sounds. …
... also found a ROM selector schematic for a device using 27C512 ... -
+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... redrawing/correcting of the +3 schematic I'm uncovering lots of ... are many differences between the schematic from the "+2A +3" diagram ... them are errors as the schematic has several other obvious errors ... -
How compatibel is the Sprinter 2000?How compatibel is the Sprinter 2000? I have one but only trd software runs. Joystick did not work and tape in and tape out too. I have schematics bu…
... /> Micky[/QUOTE]
In Schematic of SPRINTER 2000 and here ... -
+2a CompositeWhile faffing around with my +2a I did a down and dirty mod from pin 6 of the tea2000 straight to the modulator output bit like the womble hack for t…
... +2a/b's but the toastrack nad grey +2 are bob ... -
+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... />
you've found a schematic showing the transistor circuit instead ... -
+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... ;480849]you've found a schematic showing the transistor circuit instead ... -
Best model to buy...Hi all, Long time lurker, finally signed up. Had a speccy (a 48k+) back in the day (and a C64 for my sins), played a lot of games and got into machi…
... that looks nice get the toastrack, if you want something with ... /> just be aware that the toastrack and the +3 are the ... -
Best model to buy...Hi all, Long time lurker, finally signed up. Had a speccy (a 48k+) back in the day (and a C64 for my sins), played a lot of games and got into machi…
... /> just be aware that the toastrack and the +3 are the ... -
Multiface 1 cant load tapesIve just acquired a Multiface 1 for my 48k, seems to work alright, brings up the menu etc but when i go to load a tape,(and this is in the off or on …
Weird, just tried it in the toastrack and it works, tried it again in the 48k and nothing, its definitely a multiface 1 not the 128k version, cant understand it, anybody? -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
... here's what the completed schematic looks like (at a fairly ... -
Help needed +2 pleaseI have a 128k+ that when powered up through the rgb or aerial connection just shows a black screen. But I can still see the list of options and run d…
... datasheet or look up the schematic to find the right pin ... -
Help needed +2 pleaseI have a 128k+ that when powered up through the rgb or aerial connection just shows a black screen. But I can still see the list of options and run d…
... datasheet or look up the schematic to find the right pin ... -
Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…
... 5 grey +2's, another toastrack and a rubber keyed issue ... -
Recapping your SpeccyHas anyone ever done it? I have several vintage amps, tuners, cassette decks that have been recapped. So just wondering are there many on WOS who ha…
... a special part of the schematic of a device where a ... -
zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…
... ]
According to the schematic I have, IC17-24 are ... contended memory.
My schematic does not clarify which bit ... -
Poll: how much *space* does your Sinclair collection occupy?I was going through my Sinclair stuff today (to gather various bits & pieces in 1 place), which made me wonder: how much [I]physical space[/I] does y…
Currently I have a ZX81, a 48K rubber keyboard, 1 toastrack, 5 grey +2s, 2 +2A's and a +3. That's the Sinclair stuff. Then I have 4 Atari ST's and an Amiga 500! -
Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…
... lazy) do we have a schematic of the multiface in question ... -
Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…
... lazy) do we have a schematic of the multiface in question ... -
Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…
... lazy) do we have a schematic of the multiface in question ... -
Whole upper memory lostHi! I own a rubber key Spectrum with 48K RAM. Suddenly it lost it's whole upper memory. All diagnostic programs says that it's 16K model with workin…
... ) wasn't reproduced correctly, and schematic shows which RAM chip corresponds ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
... , I think the +2A/+3 schematic is done, so I'll ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
I tried to use this schematic to spot a faulty memory ... , but... I couldn't! The schematic lacks the information about which ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
... ]I tried to use this schematic to spot a faulty memory ... , but... I couldn't! The schematic lacks the information about which ... for clarity like the +2B schematic, Of course I missed the ... for the RAM chips. New schematic at the same URL. -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
... need to know which, the schematic was wrong for the +3 ... pin connect, if anywhere (The schematic doesn't show the TEST ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
... pin connect, if anywhere (The schematic doesn't show the TEST ...
