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I/O port adress map of Spectrum and interfacesI'm looking for an adress map of all the used and unused I/O ports for the ZX-Spectrum. Many years ago I designed an I/O board for the Spectrum that…
... all the used and unused I/O ports for the ZX- ... I designed an I/O board for the Spectrum that can adress 16 I/O ... Spectrum and as far as I know it also works ... for the Spectrum and I would like to know ... before I try to combine them.
The port adresses ... -
128 I/O portsIn The Spectrum Hardware Manual there is a small circuit on page 71/72 to allow 128 I/O ports by using IORQ+A7 to override IORQGE, so any I/O access …
... to allow 128 I/O ports by using ... any I/O access at a port with A7 ... so freeing all I/O ports in the ... Looking at the 128 I/O ports patch, it occurs ... /> /
|\ |/
A7---+ O---+
|/ |\
v
... -
Parallel to serial z80 i/o portI have an Opus Discovery and an Alphacom 32 printer. I want to see if I can make a cable that will use the Opus Parallel printer port. The question i…
... pins to the Opus printer port pins...
... So of the two instructions I can see common notation ...
Niether of which I see available on the Opus ... ?)
Note: I assume in the Alphacom 32 ... -b etc then I am sure i can make a custom ... -
DCP P-PACK (4K RAM I/O)Ive got these I/O Packs in fantastic conditon (one of them is boxed as you can see) It would be a waste to put them on ebay I feel, so I'm intereste…
Ive got these I/O Packs in fantastic conditon (one ... put them on ebay I feel, so I'm interested to see ... -
I/O contention model questionHi everyone, Sorry for my poor english. Together with a friend we are working on ZX Spectrum 48k implemented in FPGA. We have found bug in the Spect…
... c.s.s faq describing I/O contention.
The 48k ... is useless.
So, I'm curious how is it ... in real zx spectrum. As I do not have hardware to ... check right timings I can only ask if someone ... -
List of I/O ports used by common peripherals?I remember looking at a file (just plain text, IIRC) a while back that listed all the IO ports used by various bits of Spectrum hardware, such as the…
I remember looking at a file ( ... disc drives etc.
I just can't find the ... exists? Does it include the I/O ports used by the DivIDE ... -
Tape I/O in z88dkAccording to the documentation, z88dk appears to have facilities in its spectrum-specific library for tape i/o - [url]http://www.z88dk.org/wiki/doku.…
... spectrum-specific library for tape i/o - [url]http://www.z88dk.org ... -
J Invalid I/O devide, why ?Just tinkering with the asm code i got this error when executed the C/M: J Invalid I/O devide the liune that caused this is 'Call 15DE' that calls t…
... tinkering with the asm code i got this error when executed ... C/M:
J Invalid I/O devide
the liune ... to call the subroutine so i just typed this line into ... -
Buffered I/O how-to?Hello. How do I implement a buffered I/O? Not all Speccy's I've got will work with more than one device connected to the rear.
Hello. How do I implement a buffered I/O? Not all Speccy's I've got will work with more than one device connected to the rear. -
Multi I-O InterfaceHi all, I found this by luck, and just want to share. Did you ever noticed? https://www.ianjohnston.com/index.php/projects/58-project-022-zx-sp…
Hi all,
I found this by luck, and ... -project-022-zx-spectrum-multi-i-o-interface
If its ... -
The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…
... version:
[code];old I/O port adresses
DAT EQU ... br /> #E3#EB#F3#FB xxxxxxxx111BA011 xxxxxxxxx11BA01x WD1772 WD1772
#FB/251 xxxxxxxx11111011 xxxxxxxx1xxxx0xx - DATA ... -
IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... they perform [i]I/O port access[/i]. Both memory access and I/O port access make use ... single even numbered I/O port is actually the [i]same[/i] I/O port, mirrored throughout the ... means port $fb (1111 1011), but also port $f3 (1111 0011). Any port that ... -
ZX Spectrum +3 - incompatible ?Hello :) I'm newbie here. I know WOS site since years, never checked forum before ;) , but this moment came when I have problem. I wanna buy ZX Spe…
... :)
I'm newbie here. I know WOS site since years ... /> [quote] * Reading a non-existent I/O port no longer returned the last ... yet. Compatibility is important thing. I have 1 day to decide ... , before I do this, I need answer on these ... -
SPIN's breakpoints - an overviewAs quite a few people have been asking how to set breakpoints on memory write etc. in SPIN, here's a description of the way the breakpoints work. Get…
... to a specific address or I/O port.
[code]
UNTIL ... ADDRess). You can break on port I/O instead by using RPORT and ... when no memory access or port I/O has taken place on the ... out for, regarding port I/O: The Z80's port input/output ostensibly uses ... -
ZX Spectrum Light Gun - PROGRAMMINGAmongst some items I recently acquired was some information on the Spectrum Light Gun. Amongst this is a bit of hand-written paper which gives the i…
Amongst some items I recently acquired was some information ... it within games.
I can't find this anywhere ... 65533,7 to select control port
OUT 49149,63 - ... ,14 to pick I/O port
IN 49149 gives port reading
< ... used by the serial port) -
New colors / switchable color palette with regular ULA ?Hello. This may be an ignorant question but I just thought about it today and wanted to post it here to get some opinions. OK, so, today, while goin…
... old issue1/issue2 video symptoms. I knew the video circuitry needed ... readjustment but I just didn't have ... away.
Tonight I looked at the Spectrum Hardware ... resistors via software, using an I/O port and a few extra resistors ... -
Mouse systems for ZX Spectrum[U][B]Mouse systems for ZX Spectrum[/B][/U] Okay, I have been reading the [URL="http://www.worldofspectrum.org/forums/showthread.php?p=688449#post68…
... :-
[I][B]Spectrum I/O port details[/B][/I]
[ ... known variant or "standard", which I/O addresses are used?
... mice / which mouse interface[/B][/I]
[LIST]
[/LIST]
[I][B]Software[/B][/I]
[ ... -
SPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…
... interface plugs into the expansion port of the Spectrum and ... / disabled, thereby ensuring full I/O compatibility with all existing hardware ... selected from software via an I/O port. Some of the new ... new attribute modes was [I]Snake [/I]and was created by ... -
Help me identifying...Hello to everybody! ... an unknown RS232 interface, of which at the moment I cannot show a photo. The key characteristic is that it's based on a Mot…
... , of which at the moment I cannot show a photo. The ... on a Motorola MC6850 ACIA. I suspect that not very many ... this evening I can post a list of the I/O port addresses and ... -
Interesting 48K failureI thought I'd recount a failure I've not seen mentioned before that I saw tonight while fixing a 48K issue 6 board. The background: The initial fail…
... edge connector). However, when I plugged in a Spectranet to ... menu. The Spectranet monitors port 254 for the border colour ... a contention problem (basically all I/O ports would get contended) ... ULA from seeing odd numbered I/O port addresses. This was never ... -
Quiz VI - Trident on VESA Local Bus.... Something to keep everyone busy while Arjun sorts out his caboodle of questions.... Ok, 12 quick fire questions.. Some cryptic - you`ll have to un…
... OUT to an I/O port?
Only joking, I know the Poke ... -
Spectrum edge connectors and 'Dataman Softy S4'Hi, I moved this from the sales thread because it seems more appropriate...anyway... I was twerping around the idea of turning a Spectrum into a we…
... :08, Dan wrote:
Anyway, I had a thought about connecting ... S4 to the edge connector; I can then use this in ... up. Attach /ROMCS to an i/o port bit or an instruction fetch ... -
Speccy machine code info where is it?Recently I've been trying to learn Z80 and I've managed to make limited progress (some of my routines even compile now!) but I seem to be having trou…
... /> [/quote]
I think John Elliott's site ... - The keyboard is attached to i/o port $fe (254). The keys ... during a 16-bit port read identifies which row ... read a 16 bit port address is to put ... address and attribute addresses. I'll leave that for you ... -
New project for 256 colours Games emulator!O.K. , I suggested Jonathan Needle ( Creator of the excellent Spectaculator at [url="http://www.Spectaculator.com"]www.Spectaculator.com[/url] ) to c…
... convert the games. Infact, I see this as a *major ... it using a couple of I/O ports (much like you ...
A bit of one I/O port could be used to switch ... new screen.
I like this because:
- Simple-ish to port games since you're just ... -
CHROME: a new ZX model! :)Probably You know already about 'last days news', but well... ;) Such informations are so important that I'll put it here: here is a news about n…
... mode optional too? How can I swith it? (3,5/7Mhz ... MHz switchable via jumper or i/o port
>For what ... ? 128K+? Any others...?
---------
I really don't know that ... keys )
>Can I plug it into normal TV ...
