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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…
... acts as the [i]status register[/i] when it is read ... a completely unrelated [i]command register[/i] when written. To have ... , keys 1 to 5, keys Q to T, keys A to ... -
The I register and IM 1Hi al! I've been doing some coding, replacing the BASIC ROM with my own code and upon examination of a few 16Kb cartridges, all the ones I've look…
[quote]Q-1: I AND R REGISTERS. ... , the contents of the I register are placed on the upper ... ://www.z80.info/z80_faq.htm#Q-1]here[/url] :D
register can cause the ULA to ... -
New javascript-based emulator just publishedHello, community! I am so glad to present to you my new javascript-based emulator (I've called it [b]jVGS[/b]) which is used to play games at our …
... variables insted of 8-bit register. Flag register value is calculated only ... that get and set F register. They are not trivial, as ... -
Windows 10 Anyone Got it YetSome of my collegues have been installing or updating their OS to Windows 10 and have been speaking very favorably about it,except the lack of driver…
... /> http://winsupersite.com/windows-10/q-im-done-windows-10-how ... elsewhere aswell (tech radar? the register? I dunno, winsupersite.com and ... -
A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... the top of demo.c. "q" increases the number of sprites ... -
A few questions about sound and keys in BASICIf I want sound in my BASIC game I have to use BEEP right ? It seems to lock up the CPU for far too long . On Arjun's page I found how to use CALL 94…
... from $028e KEY_SCAN the DE register and the Zero flag indicate ...
1 24 36 00100011 Q 25 37 00100101 A 26 ... -
Retro Virtual Machine is out!Fantastic emulator Retro Virtual Machine (@retrovm) is out today. It can emulates Amstrad/Sinclair models range. Give a try! http://www.retrovirt…
... and it failed the R register test and the IR contention ... pass all the test from Patrick and all other test i ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... , F, & G
; #FB - Q, W, E, R, & T ... redundant save of the C register to A which was not ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... what is left in the register is 0.
see ... , stashed in (kbd_buff + 1)
Q to T mapping from 10 ... the bit 7 of C register on exit if you are ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... , #C6, #DA, #6C, #36, #00 ; Q
db #7C, #66, #66 ... , #CC, #CC, #7C, #0C, #0E ; q
db #00, #00, #7C ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... with random stuff in BC register lol
[code]
register was from here
; https ... , #C6, #DA, #6C, #36, #00 ; Q
db #7C, #66, #66 ... , #CC, #CC, #7C, #0C, #0E ; q
db #00, #00, #7C ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
Done the difficult part of escape characters now
[url=https://postimages.org/][img]https://i.postimg.cc/LXp4zNqc/escape.png[/img][/url]
Need to make putc do sensible things if it sees non-printable characters, only \n, \\, \', ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
Fixed the bug with printing of ""
Now handles all the escape characters when outputting them
\r returns to beginning of line
\t moves output position to next multiple of TAB_WIDTH (has to be a power of 2 for now)
\f ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... complement without using a spare register was from here
; https ... , #C6, #DA, #6C, #36, #00 ; Q
db #7C, #66, #66 ... , #CC, #CC, #7C, #0C, #0E ; q
db #00, #00, #7C ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... , #C6, #DA, #6C, #36, #00 ; Q
db #7C, #66, #66 ... , #CC, #CC, #7C, #0C, #0E ; q
db #00, #00, #7C ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... , #C6, #DA, #6C, #36, #00 ; Q
db #7C, #66, #66 ... , #CC, #CC, #7C, #0C, #0E ; q
db #00, #00, #7C ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... complement without using a spare register was from here
; https ... , #C6, #DA, #6C, #36, #00 ; Q
db #7C, #66, #66 ... , #CC, #CC, #7C, #0C, #0E ; q
db #00, #00, #7C ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... complement without using a spare register was from here
; https ... , #C6, #DA, #6C, #36, #00 ; Q
db #7C, #66, #66 ... , #CC, #CC, #7C, #0C, #0E ; q
db #00, #00, #7C ... -
Currah MicroSourceThis is an interesting one for the experts to mull over. I've got (and love) a MicroSource interface from Currah which consisted of an 8K ROM provid…
... gets paged when the PC register passes a particular ROM address ... -
Shadow of the UnicornI've written a program to run Shadow of the Unicorn on a +2A/+3. Is there anywhere it can be put to be available to anyone wanting to play the game?…
... instructions to set the flags register to 0. It works but ... -
Forever 2002 - crossplattform 8 bit party - the 3rd editionThe new year - a year of anniversaries for all 3 major 8 bit plattforms has started. ZX spectrum & C64 are 20 years old & Atari is celebrating 30 ani…
... [/url]. Don't forget to register in
visitors&contributors ... -
Keyboard controlsAn idea occured to me when reading thread on Ultimate. What is your favourite keyboard controls layout? For me: O=left P=right Q=up A=dow…
Emulators and ROM'sHi - This is my first post here, although I have been visiting WoS for ages.... I have been on quite a few multi-platform sites that offer downloads …
... promised b)require you to register then still dont work properly ...Quiz V - the revenge of D`n`C Ok, 50 quick fire questions.. some cryptic - you`ll have un unravel the clues to get the game name, while others are description of the game. Ther…
Emulation and Debugging functionality[Cut n Paste from the original CSS post] Hi all, I'm currently working on SPIN's debugger, which is coming along nicely. Mostly, it's been devel…
... modifying registers/memory, logging
register/pc activity etc) to run ...Best Speccy ProgrammersRe-post from the thread "Who is your fav speccy programmer". It was getting rather unwieldy so I thought I'll post a new topic on this. So, after mu…
... "Joobbee"
> Chase H.Q.
24. Dave Marshall ...Machine Code ChallengeHere's a challenge for all you Z80 programmers. Points to be awarded for elegance and brevity. (I haven't got the solution either) HL addresses the …
... being held in the B register.
Doesn't really matter ...
