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Some ever noticed that +2A/+3 halts Z80 using WAIT?I mean: Anyone ever noticed that the +2A/+3 halts the Z80 using WAIT? All documentation I've read about contention state that the ULA halts the Z80 …
... ]I'd speculate that the ULA in that machine is possibly ... CPU accesses it via the ULA, not directly) and it has a ... RAM speed (as part of ULA). My second thought, the use ... -
IDE controllerRecent time I have problems with my ide hdds. I turn on the computer, and the bios won't detect both primary ide drives. Then I open case, pull out a…
... saying that IDE drives were not found?[/QUOTE]
It ... and primary slave hdds are not detected. The secondary slave atapi dvdrw ... is detected. Then when I unplug the ... -
Rtype controlsdoes anyone know if its possible to use a kempston joystick playing rtype? The reason i ask is because i have a sega control pad and i'd like to use…
... starts. If a Kempston is not detected, then you can't select ... -
I'm not getting a picture up on my puter screenToday, I switched the jumpers on my hard drives, so that master became slave and slave became master. But when I switched my computer back on, it all…
... old Master Slave setup and not detected the new one, BIOS's ... finished.
If your not sure how to go about ... found accordingly. (IMPORTANT - This will NOT delete any data, don't ... -
DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…
... per second
this is not the case it trasnfers 2mb ... refresh and certainly no video ula ram contention to contend with ... for ntsc machines!
pity ula+ not sam compatible and still noone ... -
+3 ULA question.I have a +3 and a DivIDE+ unit. Another user has suggested that the reason the DivIDE+ doesn't work on the +3 is that the ULA may be dud. I have trie…
... the +3 is that the ULA may be dud.[/QUOTE]
ULA from?[/QUOTE]
From a ... do not work in a +3, what about 128K ULA or +2 ULA ... ?[/QUOTE]
The +3 ULA (not really a ULA at ... -
+3 ULA question.I have a +3 and a DivIDE+ unit. Another user has suggested that the reason the DivIDE+ doesn't work on the +3 is that the ULA may be dud. I have trie…
... it could be though, if not edge connector?
[quote]The +3 ULA (not really a ULA at all, but we ... last time. If it's not socketed I'm not touching it! -
48k rubber key screen corruption[IMG][URL=http://img195.imageshack.us/i/img7398g.jpg/][IMG]http://img195.imageshack.us/img195/5563/img7398g.th.jpg[/IMG][/URL] Uploaded with [URL=htt…
... , IIRC it had a dead ULA. Not saying that's the case ... start (and/or put this ULA in a known good Spectrum ... -
Microdrive MaintenanceHi All I've come into possesion of two microdrives and 5 cartridges. I have an interface 1 which I believe is fine. I can issue commands to the micr…
... />
a) Check it has not ridden up the metal shaft ... />
Apart from swapping the ULA (not an easy job), there is ... probably not a lot else you can ... -
help...my divIDE+ doesnt work anymore...I have a Spectrum +2 and divIDE it was working I loaded Monty on the run i switched it off it recognised the card but pushing on the button doesnt br…
If the card is not detected then reformatting will not help.
What to format in such case ? -
help...my divIDE+ doesnt work anymore...I have a Spectrum +2 and divIDE it was working I loaded Monty on the run i switched it off it recognised the card but pushing on the button doesnt br…
... ]If the card is not detected then reformatting will not help.[/QUOTE]
If it is detected in ... -
MF3Z80 without +3e (like M3Unlock)Recently I've had a pop again at putting the copy protected Rainbow Islands onto real +3 disk. Some people may remember I tried to do this some time …
... A: (and no internal) thus not allowing me to copy to ... have both drives enabled and not be able to load DB1 ... (configured as drive B) is not detected by your copying software... I ... -
Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …
... pages are fast memory and ula not slow down pages 1,3 ... -
+2 grey composite modWithout digging out the schematics, is it possible to do the composite mod like the 48k on these?
... writing now.
The ULA definitely has U, V, and ... /> Yes, but only the 48k ULA, not the 128k ULAs - both 128 ... nad +3/+2A/+3 have not UVY. Look at schematics! -
+2 grey composite modWithout digging out the schematics, is it possible to do the composite mod like the 48k on these?
... ]Yes, but only the 48k ULA, not the 128k ULAs - both 128 ... nad +3/+2A/+3 have not UVY. Look at schematics![/QUOTE ... it has the 48k schematic, not the 128k!!! No wonder I ... -
RGB to VGA convertor for ZX128/+2/+2A/+3David Luftner release source code (VHDL) of SCANDOUBLER for ZX128/ZX128+2/+2A/+3: [url]http://velesoft.speccy.cz/other/scandoubler-for-zx128_fixed_by…
... must be fixed bug). ZX48 ULA not use RGBI output then must ... -
GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…
... BC=0(no detect) / 1(detected mouse)
;~~~~ detect ... on)
;1=mouse detected/0=no detected
DETECT_M ...
;BC=0 - mouse not detected
NODETECT dec bc
MOUSE NOT DETECTED if :
- values on ... -
RGB to VGA convertor for ZX128/+2/+2A/+3David Luftner release source code (VHDL) of SCANDOUBLER for ZX128/ZX128+2/+2A/+3: [url]http://velesoft.speccy.cz/other/scandoubler-for-zx128_fixed_by…
... must be fixed bug). ZX48 ULA not use RGBI output then must ... for ZX48 is complette, but not 100% tested.
- firmware for ... -
Hi-Res 48K pcb photoany one got a hi-res photo of a speccy pcb, need one for some tattoo work I want to have done on my back I could crack open one of mine, just someon…
... over a few sittings and not an entire pcb, the idea ... a zilog z80 (not another make) or the ula not sure as yet -
Hi-Res 48K pcb photoany one got a hi-res photo of a speccy pcb, need one for some tattoo work I want to have done on my back I could crack open one of mine, just someon…
... over a few sittings and not an entire pcb, the idea ... a zilog z80 (not another make) or the ula not sure as yet ... -
Emulator that breaks on TZX tape stop?Is there an emulator that will break/pause on TZX tape stop, so I can save a snapshot before it redraws the display? TIA!
... tape when the program is not detected as Loading, so you don ... -
Price For A TR-Dos Drive And Interface?hi all im seriously considering getting a tr-dos unit to to use with my various spectrums and was wondering wot sorta price they go for and would be…
... /partitions. But create FAT table not use. :(
But next ... or USB flash pen are not detected as harddrives, so only first ... -
BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…
... are square wave in reality not grow at "Ludicrous Speed" (more ... speed) it grown fast. The ULA not generate a perfect square wave ... /> The tape reading-speed should not change if you press tracktor ... second.
The sound generate not change, it only used for ... -
BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…
... magnitude of those fluctuations are not noticeable to human ears, ... there :) Those signals do not have the same bandwidth (the ... speed) it grown fast. The ULA not generate a perfect square wave ... frequency.
The ula itself is generating very sharp ... -
For which Spectrum is this ULA?For which Spectrum is this ULA? Ferranti ULA 9RB015E 8428 Micky
Doesn't sound like a ULA for a Sinclair machine at all. The Spectrum used the 5C and 6C series ULA, not a 9R. How many pins does this have? -
The 1969 Moon LandingsTrying not to sound too much like our 'Cornishdavy' was the Moon landings in '69 faked? [url]http://en.wikipedia.org/wiki/Moon_landing_conspiracy_th…
... called foul play had they not detected it? -
Altera CPLD vs Xylinx FPGAI will dig into the world of FPGA's, mainly to find something that can replace one or more GALs for my current and new projects. And it's never bad t…
... might not be all that difficult - mcleod_ideafix's ULA+ implementation ... the resources of the Spectrum ULA).
Rough ... macrocells - Chris Smith's ULA (not ULA+) implementation fills this CPLD
not all FPGAs have dedicated ... -
Realspec emulator- works on new Windows?Dear all, anyone has this experience? I wanna equip myself with the new notebook. And I need to be able to work in Realspec Emulator on it (because …
... ]
Avira silence is not a sign that exe file ... . Most of the viruses is not detected. If some program requires to ... -
Realspec emulator- works on new Windows?Dear all, anyone has this experience? I wanna equip myself with the new notebook. And I need to be able to work in Realspec Emulator on it (because …
... =ZXMAK;705768]Avira silence is not a sign that exe file ... . Most of the viruses is not detected. If some program requires to ... -
ZX Interface 1 testingI've got a few interface 1s and I want to test them out to see if they all work fully. What would be the best way to test them? I've got a microdri…
... a reply, the IF1 was not detected at all.
If you ...
