-
Short Z80 QuizQ1) Which program gives different result ? A) XOR A ADD A,A B) XOR A ADC A,A C) SCF ADD A,A D) SCF ADC A,A Q2) What is the equivalent of NEG …
[NEW]: Spectaculator 4.0Hi everyone, Finally managed to finish it... enjoy! --- [NEW]: Spectaculator 4.0 Spectaculator is a Sinclair ZX Spectrum emulator for PCs runnin…
... .
o Changed the contended memory model for the 128k ... ,3,5,7 are now contended rather than 4,5,6 ...Emulation accuracy and how it affects softwareHi folks. I was thinking of bodging together a rudimentary Spectrum emulator myself, not as a competitor to the other emulators, but as an integrate…
... FAQ.
As for contended memory and finite-speed screen ...ANNOUNCE: Fuse for Mac OS X 0.7.0Following the release of Fuse 0.7.0 is the unsurprising release of Fuse for Mac OS X 0.7.0 which should be available for download shortly at the Fuse…
... ZXCF support.
+ Much improved contended memory and floating bus emulation ...(Belated) ANNOUNCE: Fuse 0.7.0 and libspectrum 0.2.2 releasedThe Fuse team is pleased to announce that release of Fuse 0.7.0, the associated utilities and version 0.2.2 of the Spectrum emulator support library,…
... ZXCF support.
+ Much improved contended memory and floating bus emulation ...IM 2 interrupts and smooth scrolling - easy peasy!Okay, been fiddling around with IM 2 and have actually mastered (I think) how to use IM 2! Now I run my game Ragnar Revival in IM2 and use HALT to sy…
... Revival in IM2 and use HALT to sync screen drawing (dumping ... manipulation (a scrolling text) using HALT, and one without IM2 and ... HALT.
Here is the ...Game loop design?Having some thoughts on how to design the game loop and could do with some hints and tips from folks who have done it before! It's all about how to …
... ,RET interrupt function, so that HALT can be used to time ... /> jr z,nosprdraw
halt ;Wait for interrupt
call ...A few questions regarding EmuZwinA few questions regarding EmuzWin 1. I have been trying to write a program to generate multicolour effects on the Spectrum,ie more than 2 attributes…
... have something to do with contended memory, but don't know ...A few questions regarding EmuZwinI had posted this in the development forum and then remembered there was an emulators forum, so apologies for the repetition. 1. I have been trying …
... have something to do with contended memory, but don't know ...Machine Code Sprites Example Code Using Char Based SystemBelow is my WIP code to do smooth screen wrapping sprites using char positions and offsets, as opposed to writing direct to a line (0-191) and shifti…
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... waits till the next interrupt (HALT) so that it is in ... /> LD (OKTOFLIP),A
HALT
JP MAIN ...Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…
... /> LD A,0
MLOOP HALT
LD (SCRPOS),A ;SCROLL ...Zaf-forth to Z80 compiler Build 5This forth like complier is changing almost every day with new items been added. Here is a new Zaf-forth word add it the sptword.fth file - which is…
Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…
... with screen refeshing, interrupts and HALT command, but I still dont ...name that game It was definately a budget release a kind of future sports games with two robots maybe on wheels maybe floating where you had to shoot the ball int…
... you would slow to a halt and couldn't move till ...Battle ValleyHope someone can help. I used to love this game, but I've forgotten how you 'halt' the helicopter (or tank). I know you have to stop the helicopter -…
... I've forgotten how you 'halt' the helicopter (or tank). I ...How many T-states takes PUSH DE ?Hi. Just a quick one. According to z80.info docs, a PUSH DE should take 11 T-States to be executed. But WHAT if SP is pointing to Contended Memory,…
... if SP is pointing to Contended Memory, specially to the display ...Tape stopsHi, I'm trying to sample a tape, but it stops in the middle of the tape. I've tried it on 4 different players, and it stops on all of them. I've t…
... again it grinds to a halt almost immediately. It does this ...Hard drive imagingThe IT technician at the school I work at is having problems with the software that we use to distribute hard drive images to multiple machines at th…
... whole network grinds to a halt.
Can anyone suggest ...my dodgy speccys.hi people, i was wondering if i could engage some opinions / thoughts / ideas of anyone, regarding my current "fixing up" of my speccys, since you s…
... tape player slows to a halt within a second or two ...Memory Map/ContentionHi I'm new to speccy coding (well I did some z80 coding a few years back - like 20yrs ago :) ), and I'd like to get back into writing some scrolling…
... bytes
5B00-7fff 08k Contended Memory
8000-FFFF 32k ...Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…
... ),hl
lp1:
halt ; Wait for screen refresh every ...Which would be fasterSay you want to use a variable value of 0 to 255 in a BASIC program, which way would be fastest? Say for arguments sake you wanted to use two variabl…
... store the value in non-contended memory above RAMTOP, i.e ...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…
... the RAM banks were now contended causing high-speed colour-changing ...128k Page FlippingOver on adverts, AOwen wrote the following: [quote=aowen]The trick, as I understand it, is to redraw the whole screen each time at #c000, but point…
... to wait for a refresh (HALT) until swapping screens, when is ...Manic Miner port on Wiicade? Want to assemble a team?Oh, feel free to move this topic, forum gods. It IS development, but for Flash instead of the Spectrum. I'm a 15-year-old American with an obsessio…
... , scrolling slows games to a halt and there's a little ...My little first set of routines.Hi all, I just coded a little set of routines just to draw a screen on video mem and a fade out. I could have just copied the screen rendering rout…
... />
NextPass:
halt
halt
halt
halt ;just a delay (1 ...ZX Spectrum technical information wiki[With vague apologies for the multi-post] In order to push out updated information quicker than is currently happening with the [url=http://www.worl…
... ] and contains updated and improved contended memory information compared with that ...
