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DIVIDE PLUS - ZX bus protectorI make new ZX BUS PROTECTOR for use with DIVIDE PLUS interface. This is very small "convertor" for connection to new ZX BUS connector. PCB contain on…
... use external memory)
- ROMCS and both ROMOE signals on ... -
Connecting a ZX Interface 1 to a +2AI have a customer with a Spectrum +2A computer - he has a working ZX Interface 1 and microdrive which has been tested with his +48 machine. However,…
... is that there are two romcs lines, one for each rom ... -
DIVIDE PLUS - ZX bus protectorI make new ZX BUS PROTECTOR for use with DIVIDE PLUS interface. This is very small "convertor" for connection to new ZX BUS connector. PCB contain on…
... external memory (remove problem with ROMCS and ROMOE signals)
ROMCS
version 3:
The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... expansion bus mod restores the ROMCS line (so you could use ...The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... expansion bus mod restores the ROMCS line (so you could use ...What model next ?Hi All I already have two 48k rubber kyed 48k Spectrums and a Grey +2 What to get next. ZX Spectrum + ZX Spectrum 128 Toast Rack ZX Spectrum +3
What model next ?Hi All I already have two 48k rubber kyed 48k Spectrums and a Grey +2 What to get next. ZX Spectrum + ZX Spectrum 128 Toast Rack ZX Spectrum +3
... bus, and hardware that requires ROMCS on the expansion bus. Using ...The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
...
- possibility connect peripherals using ROMCS signal to +2A/+3 bus ...Tape preservation toolsIn the latest MakeTZX thread of doom several people said that it would be good to have active development of tape decoding tools. I needed tape file…
... at the point where the ROMCS line changes from high to ...Speccybob PCB layoutSorry to start yet another Speccybob thread, but I can't seem to find out if anyone has tested Mike Wynne's PCB layouts. I have amassed all of the co…
... , that some signals such as ROMCS aren't present in the ... I can only think of ROMCS right now ....DivIDE Real Tape?Am I going mental? I can't get my speecy to load from tape with divIDE installed. So my question is.. How do you load from a real tape when your div…
Switching/cuting the ROMCS-Line will maybe help.Rom Cartridge - How does it work?So I've got me an IF2 and it has this ROM cartridge slot. How does it work? I read Paul Farrows site but one question remains unanswered. If I have o…
... the 0-16k area via /ROMCS.[/QUOTE]
Its pretty ...Switching peripherals on and offis there a way in which i can add a switch to switch off peripherals and switch another one on i.e. Multiface, DivIDE etc? Can i add it on the NMI o…
... it on the NMI or ROMCS lines on a 48k Spectrum ... as they dont have a ROMCS line.
i dont want ... MREQ. I don't think, ROMCS will be enough. As for ... +2A/+3 they have two ROMCS for their both ROMs, but ...Weird issue with 128 Heatsink and IF2 cartI came across a weird issue with one of my 128K heatsink spectrums.... First of all i burned Paul Farrow's 128K RAM tester v 2.06 on a 27C128 eprom …
... for disabling the internal ROM (/ROMCS) and that connection to edge ...BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…
... - I once accidentally cut the /ROMCS line and it took me ...BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…
... - I once accidentally cut the /ROMCS line and it took me ...MB02 picsI got an original MB02 from someone to fix, and of course I made some pics to share (click for magnification): [URL="http://benophetinternet.nl/hobb…
... at the signals:
1. ROMCS has to be low - if ...ROM switch on NMIHello! Please, help me or point in the right direction. I am building a project for 48k spectrum which must activate its rom (actually static ram) …
... a flip flip to hold ROMCS. If you're using a ... or PNP transistor to hold ROMCS high. If you're using ... in the CPLD (basically your ROMCS output will be either high ...ROM switch on NMIHello! Please, help me or point in the right direction. I am building a project for 48k spectrum which must activate its rom (actually static ram) …
... enough for CPLD to switch ROMCS. It seems okay, but i ... or PNP transistor to hold ROMCS high.
[/QUOTE]
ROM switch on NMIHello! Please, help me or point in the right direction. I am building a project for 48k spectrum which must activate its rom (actually static ram) …
... wired or via NOT to ROMCS. So, the page in happens ...ROM switch on NMIHello! Please, help me or point in the right direction. I am building a project for 48k spectrum which must activate its rom (actually static ram) …
... wired or via NOT to ROMCS. So, the page in happens ...ROM switch on NMIHello! Please, help me or point in the right direction. I am building a project for 48k spectrum which must activate its rom (actually static ram) …
... enough for CPLD to switch ROMCS. It seems okay, but i ...Spectrum +3, Issue 2...I have just had plonked on my desk a nice issue 2 Spectrum +3. I'm not sure if its 100% working yet, as I have not plumbed it into a telly. So, assu…
Jumpers on a divide etc will still need to be set to "+3". This is to deal with the fact that the +3/2B have two romcs lines.ZX Spectrum +2A 128K Peripheral CompatabilityHey guys, Are the ZX interface devices and microdrives compatible with the +2A machine? Col.
... /> No. The issue is the ROMCS line on the edge connector ... and the +2B have two ROMCS lines. However, you can modify ... that rely on a single ROMCS line will work. Not sure ...Building a PlusD - problemsI'm building a PlusD for myself, but I'm having difficulty getting the ROM to page in properly. At this moment the ZX Spectrum boots, but is VERY slo…
... /> o16.oe = vcc
;romcs
/o15 = /i2 * /i1 * /i3 ...Building a PlusD - problemsI'm building a PlusD for myself, but I'm having difficulty getting the ROM to page in properly. At this moment the ZX Spectrum boots, but is VERY slo…
... ' . On the other hand, Spectrums ROMCS is normally low, so a ...Building a PlusD - problemsI'm building a PlusD for myself, but I'm having difficulty getting the ROM to page in properly. At this moment the ZX Spectrum boots, but is VERY slo…
... , but the same result: the romcs keeps toggling, and the computer ...Odd versions of the Multiface One.I've been looking through the adverts for the Multiface One and it's clear that there were a number of versions available. Note the earliest advert …
... /2A and +2B have two ROMCS lines so you have to ...
