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Preliminary MontyHey All... A new 2009 production (port from Atari) of a game called "Preliminary Monty" is out. It is a VERY nice platform game - with a bit "crude…
... /> kempston joy test example:
HALT ;after interrupt ula draw border ... (fixed_kempston_joy).zip[/url]
HALT
IN A,(31) ;testing ... -
Very basicI found the wos site a few months ago when searching for solutions to my broken spectrum, that i had dug out of storage and was learning basic on. Si…
Unfortunatley my progress with learning has ground to a halt over the last week, i cant get near the computer as the missus is wheeler dealing on ebay shes turned into alan sugar overnight! -
Think! and copyrightHello all, I would like to make a small game for Windows, based a little on Think! - my questions are: should I ask someone for the permission? If s…
... of the company) to stop halt his PC version of Fairlight ... -
+3 dead(!)Hi, When I turn on my +3 I see only white and black strips (vertical) on screen any idea on how to fix it? Thank you in advance Chris [IMG]http:…
What's the status of HALT pin at the Z80? Is it permanent high, permanent low or pulsing? -
+3 dead(!)Hi, When I turn on my +3 I see only white and black strips (vertical) on screen any idea on how to fix it? Thank you in advance Chris [IMG]http:…
... ]What's the status of HALT pin at the Z80? Is ... -
+3 dead(!)Hi, When I turn on my +3 I see only white and black strips (vertical) on screen any idea on how to fix it? Thank you in advance Chris [IMG]http:…
... a DI, then a HALT instruction, so the CPU ... from external memory. The HALT instruction continues to issue M1 ... ROM in which a HALT is executed while it's ... it does not execute a HALT...
BTW: check ... a moment (so the HALT condition is exited). Is ... -
+3 dead(!)Hi, When I turn on my +3 I see only white and black strips (vertical) on screen any idea on how to fix it? Thank you in advance Chris [IMG]http:…
... for a moment (so the HALT condition is exited). Is there ... -
Ahh.. the tape loading era! by ate bit[url]http://www.pouet.net/prod.php?which=53846[/url] It is UNBELIEVABLE!!! Effects while loading, MUSIC while loading (and loading normal speed !!!…
... flicker (normally you'd use HALT to synchronise with the screen ... -
Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…
... a lot more predictable) memory contention.[/QUOTE]
Didn't ... -
Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…
... a lot more predictable) memory contention.[/QUOTE]
Really? I never ... -
Think! and copyrightHello all, I would like to make a small game for Windows, based a little on Think! - my questions are: should I ask someone for the permission? If s…
... of the company) to stop halt his PC version of Fairlight ... -
The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... see that incrementing after a HALT you know you're in ... -
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 …
... not suffer any kind of contention. A program run within the ... -
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 …
... the BBC Micro worked without contention was interesting. The 6502, if ... -
Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…
hmmm, if your RAM was bad, it'd probably hang on boot when it does a check.
It looks a little like the kind of problems you'd expect with RAM contention problems? You got a spare ULA you can swap out to eliminate that as the cause? -
Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…
... , no INK change) so ULA contention issue would surely make black ... -
AY interface - How many possibilities?Currently the newest AY interface available for sale gives 16K and 48K owners a chance to add AY sound to their Speccy, but (correct me if I'm wrong)…
... identical Spectrums, the amount of contention is very consistent over time ... -
AY interface - How many possibilities?Currently the newest AY interface available for sale gives 16K and 48K owners a chance to add AY sound to their Speccy, but (correct me if I'm wrong)…
... identical Spectrums, the amount of contention is very consistent over time ... -
Framerate of Spectrum gamesI was reading a bit about framerates in modern games and it got me wondering about the Speccy. First off I'd hoped to find what framerate my old gam…
... have to add an extra HALT in 'cos 50fps is too ... style scrolly decor in, the HALT will keep the FPS down ... -
ZXSpin 0.7 public testingOk, now that the private testing phase is over, I need to get more people testing ZXSpin 0.7 I am not terribly interested in emulation problems, bec…
... . Problem is, the more I halt the emulation to read the ... -
Framerate of Spectrum gamesI was reading a bit about framerates in modern games and it got me wondering about the Speccy. First off I'd hoped to find what framerate my old gam…
... have to add an extra HALT in 'cos 50fps is too ... in the end adding a HALT instruction was the best solution ... -
Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... to access it (known as contention). Having the display file memory ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... think it'll need a contention cycle if the ULA is ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... ULA port, with the same contention as the existing ULA port ... is significantly easier to handle contention etc (of which there will ... reason for this is handling contention on the palette RAM. This ... update the palette will cause contention, so to avoid issues, ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... is significantly easier to handle contention etc (of which there will ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... get the port issue sorted - contention information (with high accuracy) will ... know how this will affect contention. ULA contention on even ports is ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... was trying to determine the contention timing for you all ;-)< ... speccy, then no problem. No contention.
If the ... ink and paper colours. Eeek! Contention.
[b]Border ... relies on a particular palette contention model and access timing (ie ...
