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Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…
... got it to switch from 128k to 48k mode without ... s running, on all the 128k models. Getting back the other ... method to get back to 128k mode, as paging is ... always has to start from 128k mode. It occurs to ... testing, as a program could swap between modes while it's ... -
Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…
... ; at least the 48k->128k direction. I knew that "jp ... ! For example, starting +2A in 128k mode:
CLEAR 39999: LOAD ... should probably be jumping into SWAP or STOO - unless it really ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... 8K offset.
The 128K bank switch alters different address line ... for its second bank. But, they could have implemented ... mode *as well*, with whatever bank offset they wanted, including 8K ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... . SE BASIC IV pages in bank 7 whenever it needs to ... it's possible to have 128K of sideways RAM available if ... bug now. :)[/QUOTE]
The 128K have more software because it ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... to draw the picture from bank 7 and it enables hi ... -res mode. Normally bank 0 is paged in at ... 0xc000. Bank 7 only needs to be ... put RAM in the Dock bank and page it over it ... might qualify.
[quote]The 128K have more software because it ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... to draw the picture from bank 7 and it enables hi ... -res mode. Normally bank 0 is paged in at ... 0xc000. Bank 7 only needs to be ... is the case with the 128K's two screen displays. The ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... it had money in the bank when it did.
128K.[/quote]
Most Spectrum users ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... s possible to have 128K of sideways RAM available ... You have the EXROM bank with 8k spillover ROM. ... you have the 64k DOCK bank for cartridges.
bank and mutually exclusive choice ... occupied by a specific bank. Bank#0 is internal memory ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... /> [quote]You have the EXROM bank with 8k spillover ROM. This ... is not a full 64k bank because it is incompletely decoded ... possible to connect an additional 128K of RAM.
[quote ... to 16K of the HOME bank to do video writes.
128k ULA pinout?Is there someone who has a circuit diagram or pinout for the 128k (+2) ULA?
... have it, extracted from the 128K toastrack model:
[img]http ... to the differences between the 128K and 48K ULA's. The ... /> VB (pin 12) is "video bank". It's an input telling ... read screen data from bank 5 or from bank 7.
game with a fullscreen loader?any game with a loader that has loading stripes all over the screen, not just in the border? guess there were some, even with atypically coloured st…
... it fairly easily on a 128K. I thought of a really ... it in the other screen bank. Same screen but with the ...80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... expand it to 144K with 128K compatibility :P
[url]http ... SE (only it also has 128K of RAM in the Ex ... things that expect to find BANK 7 at 32768. And the ...Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …
... screen is disappearing because the 128K ULA can switch between screens ... game starts is causing a bank switch, making the backup screen ...Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …
... both addresses. I believe the 128K +2 just responds to A0 ... 't it? So 1FFD and 7FFD will always work.
Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …
... both addresses. I believe the 128K +2 just responds to A0 ... 't it? So 1FFD and 7FFD will always work.[/QUOTE]
128k machine unless you lock the ...Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …
... is still very erratic, and 128K stuff doesn't work properly ... use the Multiface128 to view bank 1 at location 50000, it ...WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…
Fantastic work! How easy would it be to adapt your board to work in a +128K toastrack? Consider me very interested - if there was one left (after the important people got one) I'd happily swap it for money. :)WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…
... board to work in a +128K toastrack? Consider me very interested ... got one) I'd happily swap it for money. :)[/QUOTE]
swap one of them for money :) About the 128K.... mmmm ... would be plugged in the 128K ULA socket). There's 4 ...Sinclair 128 versus +2 ROMHi, A quick question regarding ROM compatibility between two 128 ROMs, the ROM for the original black Spectrum + 128K with the heatsink and the grey…
... to do. The only 128K software I've identified that ... and purposes like the UK 128K machine, but will run software ... ZX Spectrum SE ROMs in bank 0 and 1, the ... BBC Basic ROM in bank 2, and your preference of ... custom ROM in bank 3 (in my case Open ...Help me resurrecting a 128KHello to everybody. I'm really struggling along a repair of a standard 128K a friend of mine handed me over some (ok, actually a lot of) time ago. A…
... /> Another quick update: burned a 128K test EPROM from Fruitcake, ran ... up all the contended RAM bank chips, and each time the ... (therefore accesses correctly the RAM bank), then the only possible culprit ...Help me resurrecting a 128KHello to everybody. I'm really struggling along a repair of a standard 128K a friend of mine handed me over some (ok, actually a lot of) time ago. A…
... (therefore accesses correctly the RAM bank), then the only possible culprit ... probabily doing a lot of bank switching. After this, all the ... 4164 of the uncontended RAM bank, and the test routine reported ... to pull out my working 128K and pass it through the ...Help me resurrecting a 128KHello to everybody. I'm really struggling along a repair of a standard 128K a friend of mine handed me over some (ok, actually a lot of) time ago. A…
... 'm finally looking at the 128K menu. Phew!
bank was faulty, and the ... in. BIG mistake. The 128K is an entirely different animal ... chips in the contended RAM bank. This led me to ... , but in the uncontended bank. I could have never ...Disciple troubleAnother day, another problem. While waiting for my 16-to48K upgrade chips to arrive, I tried to bring my Disciple back to life, which I just bought a…
Well, you do get the 128K snapshots benefit if you upgrade ... the manual explains how to swap out the ROM, which will ...ZX Spectrum + 2 128K - Video Issue?Hi All, I have just picked up a secondhand +2 and am having a problem with it. :( When I power the unit on and hook it up to my TV with the RF cable…
... you have to troubleshoot your 128K? As already said, you MUST ... this, you must have the 128K schematics (available on the net ... ). Do you have another 128K? You could swap ULAs and see if ...Is the 128K heatsink's TV out modulator kit repairable?I have a 128K+ Spectrum that is working absolutely fine and is giving out the perfect picture from its RGB out socket (with the right cable ofcourse)…
Well I'll swap the UHF modulator with one of a 128K+ that ... the results after the modulator swap.
@ingo
why ...Is the 128K heatsink's TV out modulator kit repairable?I have a 128K+ Spectrum that is working absolutely fine and is giving out the perfect picture from its RGB out socket (with the right cable ofcourse)…
... I'll swap the UHF modulator with one of a 128K+ that ... test, to save having to swap the modulator over (and that ...No tea vicar on MB02Hello Folks, I have difficulties in getting "More tea vicar" (the free 128k version) running on the MB02. The game starts and you can choose control…
Are you running on a 128K/+2 or a +2A/+3?< ... with contended memory on a 128K/+2, so you may need ... , that poke pages in RAM bank 4 when loading in the ... final block is in RAM bank 4.
