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More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... is most welcome.
I would like to state again ... absolutely necessary to change the I/O ports due to some unforeseen problem ... -
Divide 57c and ZX PrinterAnyone know if the Divide 57c and original sinclair zx printer can be connected simultaneously and has anybody tried it?
... DivIDE Plus uses the same I/O bit as the ZX Printer ... up most of the available I/O ports. And blame Kempston for using ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... I/O ports. At present, it is possible for 48 calls to the I/O ports ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... I/O ports. At present, it is possible for 48 calls to the I/O ports ... .[/QUOTE]
I don't ... too bad because the I/O method you've proposed ... of updating the palette. I'm sure there are ... ld c, 0x3b ; set low I/O byte
xor a ; ... -
RAM PagingCan anyone shed some light as to how RAM paging actually works, at a hardware level (so not POKE xxxxx stuff). I know about CE and OE lines on DRAMs …
... address 64k of so called I/O ports. The (only!) difference with memory ... -
RAM PagingCan anyone shed some light as to how RAM paging actually works, at a hardware level (so not POKE xxxxx stuff). I know about CE and OE lines on DRAMs …
[QUOTE=Womble;405010]what other system is employed to trigger the paging?[/QUOTE]
The ULA handles the paging. The Z80 interfaces with it using I/O ports. Details are in the FAQ if you're interested. -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
[QUOTE=Danforth;407898]I remember Amstrad getting a lot ... hogging more than half the I/O ports which was entirely Sinclair's ... -
Spectrum 2-3 times more powerfull than MSX?![url]http://www.youtube.com/watch?v=2-kI0urN9tI#t=8m18s[/url]
... videoprocessor, which is accessed through I/O ports. There are some timing requirements ... issue in practice.
I like the ZX Spectrum's ... -
Spectrum 2-3 times more powerfull than MSX?![url]http://www.youtube.com/watch?v=2-kI0urN9tI#t=8m18s[/url]
... videoprocessor, which is accessed through I/O ports. There are some timing requirements ... issue in practice.
I like the ZX Spectrum's ... 's working on.[/QUOTE]
I always remember, and like, Simon ... -
Spectrum 2-3 times more powerfull than MSX?![url]http://www.youtube.com/watch?v=2-kI0urN9tI#t=8m18s[/url]
... videoprocessor, which is accessed through I/O ports. There are some timing requirements ... an issue in practice.[/QUOTE]I think the biggest difference is ... didn't exploit this though - I suspect they were quick Speccy ports. -
Spectrum 2-3 times more powerfull than MSX?![url]http://www.youtube.com/watch?v=2-kI0urN9tI#t=8m18s[/url]
[QUOTE=joefish;429321]But I'd still rather have that ... .[/QUOTE]
Of course. I/O ports and instructions are not skilled ... -oriented displays instead of #$%& I/O ports. -
Multiple interface questionWhat's going to happen if I plug in an AGF programmable joystick interface, then plug a Kempston (compatible) interface into the back of that? Will …
... both respond to the same I/O operation, and you would get ... need to look at the I/O ports for the Kempston and the ... . (This is a generic answer, I've not looked at the ... -
Retro Computer/Console's? How much are they worth?I'm a keen collector of retro computer/consoles (NES,SNES,Intellivision,Megadrive,Amiga etc..).... How do I know how much they are worth?? As in...…
... now going for about $80, I got mine 3 years ago ... machines that still have the I/O ports in the back with which ... a rare commodity, or so I'm lead to believe? -
RFC: ZXI hardware interface standardisationReposted from c.s.s to reach a wider audience [QUOTE=Andrew Owen] You may have noticed that there are more people making add-ons for the Speccy than…
... code should ever touch the I/O ports), it's about 10 minutes ... design hardware with runtime configurable ports, but the Spectranet's CPLD ... by one-time memory mapped I/O, for example, directly after RESET ... address won't cause the ports to unexpectedly change). -
Spectranet updateA couple of updates recently: * An order for PCBs has been made! I expect at least 5 Spectranet-equipped systems will be working at the Vintage Comp…
... , even if it uses different I/O ports, or a different chip to ... even make a mobile version, I've considered making something based ... -
Cant DecideI have had a lot of spectrums in my time from the 16k to the +3 and as we all know they all have flaws. I am thinking about buying another and wanted…
... video modes
* Fully decoded I/O ports
* Built-in Kempston joystick ... -
Cant DecideI have had a lot of spectrums in my time from the 16k to the +3 and as we all know they all have flaws. I am thinking about buying another and wanted…
... port and IORQGE signal implementation. I prefer also Plus keyboard over ... /> As for the IORQGE signal, I presume you're referring to ... the Timex has fully decoded I/O ports unlike the Spectrum. -
Cant DecideI have had a lot of spectrums in my time from the 16k to the +3 and as we all know they all have flaws. I am thinking about buying another and wanted…
... /> As for the IORQGE signal, I presume you're referring to ... the Timex has fully decoded I/O ports unlike the Spectrum.[/QUOTE]
Does it? I thought that the reason that ... -
DivIDEI just missed the Ebay listing of some DivIde`s that were available ! :( I`ve contacted the seller if there are any more but have had no replies - so…
[QUOTE=Alien 8;463723]I got my DiVIDE+ for a ... Spectrums are both 48K, and I have no interest in getting ... + wouldn't as well, although I note that it is incompatible ... up with the divIDE+ additional I/O ports didn't do a lot ... -
DivIDEI just missed the Ebay listing of some DivIde`s that were available ! :( I`ve contacted the seller if there are any more but have had no replies - so…
... + wouldn't as well, although I note that it is incompatible ... up with the divIDE+ additional I/O ports didn't do a lot ... /> For some reason, the one I sold to Alien 8 always ... you try this.
I don't think the DivIDE ... -
Using Interface II joystick in kempston-only gamesHi everyone! It's me again, bothering you with new crazy ideas :) I have recently acquired an Amstrad +2A Speccy with a joystick and built-in Interf…
[QUOTE=Eklipse;464562]thank you! I have found that!
But ... hardware to sniff the keyboard I/O ports and feed that back to ... the Kempston ports allowing a Sinclair Joystick to ... -
128 port hardware patchReading the ULA book has reminded me of something. In The Spectrum Hardware Manual (Adrian Dickens) there is a hardware patch to allow free use of al…
... /> OK guys, correct me if I 'm wrong:
What we ... relevant when IORQ is low, i.c. when IORQGE is valid ... IORQ.
Releasing 128 free I/O ports still can be done at ... -
128 port hardware patchReading the ULA book has reminded me of something. In The Spectrum Hardware Manual (Adrian Dickens) there is a hardware patch to allow free use of al…
... IORQ.
Releasing 128 free I/O ports still can be done at ... absolutely right (why didn't I spot that? :-?) - you can just ... -
The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... could start development immediately. I can't really answer the ... [URL=http://img259.imageshack.us/i/psyq.png/][IMG]http://img259 ... controls the game mode. Easy!!! I would personally recommend using an ... accessed using a handful of I/O ports. That means that you ... -
Spectrum +3 and DivIDE+I have won a +3 on ebay. When it arrives, I know that I can use my DivIDE+ with it, but I have read about the +3E ROMs. I mostly use Spectrums to pla…
... 8bit I/O ports. Internat AY in ZX machines use only one I/O port ... . For using software with reading I/O ports can both ... sowtware using access to both I/O ports on YM2149 can return incorrect ... connect DIVIDE/DIVIDE PLUS. As I see source code of + ... -
Spectrum +3 and DivIDE+I have won a +3 on ebay. When it arrives, I know that I can use my DivIDE+ with it, but I have read about the +3E ROMs. I mostly use Spectrums to pla…
... 8bit I/O ports. Internat AY in ZX machines use only one I/O ... port. For using software with reading I/O ports can both ... sowtware using access to both I/O ports on YM2149 can return ... />
One question I should have asked:
divide deviceHi, This is first my first post,so hello to you all I first Spectrum 48k was a Xmas present way back in 1983,best gift ever. Then I moved on to a C…
... connector will usable only as I/O ports without memory.
This ...divide deviceHi, This is first my first post,so hello to you all I first Spectrum 48k was a Xmas present way back in 1983,best gift ever. Then I moved on to a C…
... interfaces.[/quote]
So I shouldn't plug my AY ... sound card onto through connector? I don't risk Joystick interfaces ... connector will usable only as I/O ports without memory.
This ...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…
[QUOTE=velesoft;489708]I make new ZX BUS PROTECTOR ... 1, multiface, etc..) but as I/O ports only. Memory access is disabled ... is finished and work :-)
I connect DIVIDE direct to ZX ... conflicts on data bus. Tomorrow I will connect two external roms ...
