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Raspberry PI in a Spectrum 48k+ case Keyboard OptionsHi, I was lucky enough to get an empty Spectrum 48k+ Upgrade Kit Case on eBay. This is good because it doesn't involve taking apart a good Spectrum a…
... empty Spectrum 48k+ Upgrade Kit Case on eBay. This is good ... "Upgraded" on bottom. The 48k+ case has slightly more space to ... compared to the original 48k case. The only problem is I ... -
Standard Sized Cassette Case Inlay Variations.This is all about having "the full instruction" set for the standard sized cassette cases . It is very easy to lose out in this respect and sometim…
... (Virgin budget label) . In this case there are two separate inlay ... to fit inside the cassette case) . The disadvantage with this is ... sheets were included in the case when first sold . Another complication ... -
Keyboard Encoding. Would like to gather thoughts on it.Hi all, I've almost finished the first part of my open-spectrum design, and wanted to bounce one of the ideas I'd incorporated off people prior to…
... to fixing it, in case anyone can point out where ... only one of the 8 upper address lines can be ... buffered lines, but the upper 8 address lines would be ... lines defining which of the upper 8 had a low ... should let me recode the upper address line select at the ... -
Remainder (Mod) calculationsI've been figuring out how to calculate remainders after integer division by a constant divisor k (A mod k = A % k). I found that for most small di…
... overflows to 0 in this case, but note that this results ... ]
Remarks:
- The 6 upper bits of B contains the ... -
Spectrum Abuse...Just got some new Spectrums in to repair ( I find it a great way to relieve stress, excepting when I do something daft while fixing them... ) One …
... except when I put the case back on. Then it ... checked screw length just in case, and that was OK. ... microscope out. Seriously bad case of dry joints AND ... of the board. Both upper board tracks were completely ... no through plating left, no upper pad, no tracks. And ... -
Building a ZX Spectrum and I have some voltage questionsI've posted about this before looking for parts, but now I've found all the hard-to-get stuff (thank you Retrolium!). So I figured new questions, new…
... thread.
In any case, all the soldering is done ... : -4.31V
+5V to Upper RAM: +4.98V
ZX Spectrum 128 Toastrack Case wanted..Hi all, I realise this is a long shot :-) I'm looking for a ZX Spectrum 128k Toastrack case is anyone has one they're willing to part with / se…
Hi all,
I realise this is a long shot :-)
I'm looking for a ZX Spectrum 128k Toastrack case is anyone has one they're willing to part with / sell?
Thanks,
KbJBuilt a ZX Spectrum that works, but can't get the upper RAM to work?Like the title says I finished my Spectrum 3B board, and it boots, but it doesn't see the upper 32k of RAM. When it boots, the lower 16k works f…
... it doesn't see the upper 32k of RAM.
upper RAM bad. But the program ... all direct connections between the upper RAM and associated logic, and ...WANTED: tape replacement for +2?Any tape replacement possible for a +2? My +2 works wonderfully but the incorporated datacorder is simply worn out and won't load ANYTHING. Dirty sig…
... ) ;query state
In this case IN A,(254), or output ... , and the processor with the upper 32K RAM and 16K ROM ...Calling all coding munkeez...Having spent the last 8 years as a Windows application developer I thought I'd try my hand at a bit of Z80 speccy coding - something I missed out on …
... with that, no consistency, upper and lower case all over the place ...Faulty Spectrum?PLease can somebody help have just bought a ZX Spectrum 48K And the Hobbit game, i cannot get this game to load it crashes right at the end of the l…
... both of course - in the case of salvaged parts, the cost ... from another PCB - in the case of Spydas spectrum, the total ... .00 socketing of 4 upper ICs of upper memory, due to proximity ...Spectrum problemHi I've just been trying to resurrect my 48k spectrum. I'm having some problems loading some of my games, but if it does completely load, it crashe…
... us with the usual upper memory. In that case, whether or not ...Christmas gamesHi all! Do you have any favourite game with Christmas topic? I want to play some Christmas game! It needn't necessarily be a Speccy one. I downloade…
... usually Anally Retentive, Politically Correct, Upper Class Arseholes with nothing better ... " off of Christmas Cards in case non-Christians are offended. They ...Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... not
; be applied in case of a near jump (for ... repeatedly fills and clears the upper screen third
repeat:
List of RANDOMIZE USR code effects?Hi chaps, Does anyone have one of these please? Thanks.
... in RAM - somewhere in the upper 49152 bytes of memory, a ... of data. In the latter case, the Spectrum doesn't know ...Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... press any key? In that case it's most likely to ... have come loose in which case just re-attach it.
upper 32K may still be duff.Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... .
And also, in case it's of any help ... with (!) by one of the upper RAM chips! A quick replacement ...Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... chips or sockets for the upper RAM.... there may be a ... the motherboard, though, in which case you have an expanded Issue ...ZX-81 Ram Pack problemHi! I know this is a ZX Spectrum forum, but I am hoping someone here might be able to help me out... I have posted this to c.s.s. but noone was able…
... broken.
But in case I can't repair it ... the screen was random since upper memory was missing, you need ...Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... wrote:
And also, in case it's of any help ... with (!) by one of the upper RAM chips! A quick replacement ...Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... + Microdrive + PSU built into the case). Others have membranes which are ... this? Tear aparta bottom and upper part of the membrane and ...Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... data is stored in the upper half on 7 chips and ... />
I'm on his caseNonamed, unLOGOed, denied, r@re(?) and very strange SpeccyI?ve just bought [url="http://art.speccy.cz/foto/01zxdelogfull.jpg"]strange Speccy[/url] (including two interfaces, cassette recorder and nineteen fu…
... not at the side). The case on the 128 was quite ... chance to tear off the upper plastic band to see what ... nice theory, but ...just in case, I won?t lend you ...Problems with my +2A DatacorderHey folks, Bought a speccy from ebay, but i think its fucked. What do you think? Basically it turns on fine, but when i try load a game nothing wor…
... on another machine, in which case you may need to "tweak ... that's screwed onto the case. Check the circuit board for ... circuit-board from the upper section of the case. Heck, I'll ...Alien8 style 3D Tiles - TheoryHello, Are there any articles etc explaining how to do 3d style tiles, i.e. when to redraw those in front etc. I would guess you would need to work…
... parts of objects. In my case I also had another buffer ... memory runs considerably slower than upper memory so make sure the ... ; graphic routines are all in upper memory
There ...Most keys don?t workHi there, Nice to see all those Speccy fans out here, i?m not alone :) I just bought a used Sinclair Spectrum 48 k but unfortunatly it has a major …
... main board. Unscrew the speccys case and you will see where ... the plastic underside of the upper assembly. The black printed plate ...Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... B are put on the upper half of the address bus ... have the device read the upper half of the address bus ... that's a rather special case and isn't something you ...Did I killed my Speccy ???Hi guys, 1 minute ago I was working on my 128 +2A... But I made a mistake : I cut the gound on the PSU plug of the computer, and I forgot to resolde…
... ULA chip too, in which case, get a new +2a, as ... refuses to initialise a 32K upper RAM block :( Day three at ...TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…
... set at 32768 etc, no upper RAM working at all, as ... think) in every location in upper RAM - so it's half ... direct, fast access to the upper 32K and indirect, slower access ... me.
Just in case someone reading does not know ...On a 48K issue 6A......how can i isolate the 32K block? I want to test if there is any fault on the 4116's , leaving the 4532's out of the equation. Will removing the …
... test the tracks of upper ram just in case something was interfering ...
