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Struggling with this routine... Any ideas?I'm trying to write a routine that plots 3 pixels to decrease the energy bar in the top right corner by 5 units, but it just wont have it! There mus…
... 18
ld b,171 ;vertical co-ordinate to be plotted ... -
quick RAM copy using LET in BASICI'm in the process of reviewing, revising and refining all the programming tips & utility routines which I've posted on this forum over the last eigh…
... : STOP
[/code]
The vertical bars are due to S ... -
display file addressing; screen slicingWhile working on this Compendium I'm updating or rewriting a lot of stuff. One thing I eventually came to appreciate was the simple & clever way in w…
... screen slicing program in both assembler:
[url]http://www.users ... Compendium I'll update the assembler version to deal with any ... sedately) from BASIC as from assembler.
The routine starts ... -
20-column multicolour: a half-baked ideaI was writing an email reply to one Mr Jowett about multicolour routines, and in that way that explaining something to someone else makes you think "…
... me to build an interactive assembler-type tool (in Javascript, no ... -
Video capture from spectrumI got this usb video capture device from maplin to try and record some clips of programs running on my 48k spectrum. [url]http://www.maplin.co.uk/us…
... up the screen like the vertical sync is off.
vertical sync signal.
Anyone ... -
Full 16*16-digit BASIC multiplicationI liked Andre Adrian's 32-bit long multiplication routine so much that I decided to a decimal version. After all, 2^63 is only 9223372036854775808, a…
... for the page with the assembler version is in the listing ... to 8-bits for the assembler version.
The biggest ... that I'll do an assembler version for the Compendium; I ... Andre Adrian for the original assembler version
981 REM http ... -
Starting with assemblyHi Guys, I am looking forward to following this guide [url]http://chuntey.wordpress.com/2010/01/12/tutorial-zx-spectrum-machine-code-game-30-minutes…
... 't have a built in assembler. Can you guys recommend an ... assembler for me to use. Is ... -
Scrolling by 2 pixelsWhat is the fastest way of scrolling a Spectrum screen line by 2 pixels left or right? When thinking about it I've come to this simple solution: [C…
...
...[/CODE]
to scroll it by one pixel and ... then doing it again to scroll it by 2 pixels.
trying to read keyboardI have the speccy in interrupt mode 1 I used 'IM1' in assembly language then Im printing the contents of memoryu area 23560 to the screen: [quote] l…
... it.
ld a,#10 ; vertical position.
rst #16 ; print ...Hardware description - BETA DISK interfaceExist more versions and clones of BETA DISK interface. Beta disk 48, beta disk 128, brasilian clones of beta disk 48, russian clones of beta disk 128…
... with runable BAT file + SJASM assembler + ASM file with source. Run ...Movin And A Groovin Horizontal Flip improvementOn the left is the flip horizontal portion from Andy Pennell'S excellent Movin' & a Groovin' machine code screen routines from Your Spectrum #19 (Oct…
... is noticeably slower than the vertical one because it has to ...MGT MOUSE - exist really ?I read disassembly of +D rom/ram code and from address #2249 is routine for read MGT MOUSE ports. I can't find any info about "MGT MOUSE". Exist real…
... or
2254 RET Z vertical movement.
2255 LD HL ... /> 2264 RET NZ Return to vertical movement test.
2265 BIT ...Corrupt paper on zx spectrum 48kHi. When I power up my spectrum (issue 3) I get the light grey border, but the paper is black and it switches between thin red vertical lines and thi…
... it switches between thin red vertical lines and thicker blue horizontal ...Larry The Lander II-Cosmic CarnageThis Tuesday 27th around 7pm UK time i will release my last title of the year.Larry The Lander II is a SEUD vertical shooter with an automated docki…
... Lander II is a SEUD vertical shooter with an automated docking ...+2 ProblemsGot off to a bad start with my first Spectrum. The tape deck on the +2 I bought has a jammed button and won't work and when I power up I'm unable to…
... I should be able to scroll and select the start-up ...Spectrum 48k video and keyboard issueHi all, few days ago I experimented with battery supply for my speccy (48k issue 2), and I was measuring the voltage and how much current it used. A…
The Evolution of Some Nonsense[center] [B]TIMINGS FOR 100 BOUNCES[/B] [b]Ten Bouncy UDGs in BASIC[/b] [img]http://www.users.globalnet.co.uk/~jg27paw4/pourri/a000test.gif[/img] [u…
... /> [b]Ten Bouncy UDGs in Assembler[/b]
(FP arithmetic)
Assembler[/b]
(register arithmetic)
Machine code/Assembly language back in the dayHello. Back in the 80s when I was a kid, I didn't learn Z-80 machine code, but I was always curious about it. Just recently I decided to explore Z-…
... am using the Z-80 assembler that is built into SPIN ... is still waiting in the assembler window. However, writing code on ... for 4 minutes for an assembler to load from tape, then ... being lost, but also the assembler itself needs to be loaded ...800+ Spectrum 128k & 48k original titles still availableHi guys, The original thread was a bit messy and has vanished from the front page, so rather than bump it, here it is again a bit tidier: All origi…
...
Arcturus
Aspect Editor / Assembler
Asterix & The Magic ...Finders Keepers+I know a few of you are interested in this project so I thought it was about time I started a proper thread for it rather than just slipping bits int…
... />
and
Thread:Z80 Assembler for Win7 PC (64-bit ... I asked about a decent assembler that would work on a ...Upper RAM replacement module issues with the DivideI got my new upper ram replacement module from Zorn yesterday and seem to be having some issues. When the machine is without the Divide it boots up …
... black border and paper with vertical white lines on the paper ...'Best' Emulator?As mentioned in other threads, I'm in the process of disassembling and recreating my Finders Keepers source code so that I can write Finders Keepers+…
... ]
Graphics viewer [done]
Assembler [Not started - now no longer ... going to bother writing an assembler as I have tweaked my ...Taito's Dead Connection on the Spectrum?I had never seen this game before, its from 1992, but looks very suitable for the Spectrum, because of the lack of scroll. Looks quite fun to play, a…
... , because of the lack of scroll. Looks quite fun to play ...Looking for a Rastan-like coin-op game.Just remembered seeing a very high-quality arcade game (quality as in good graphics and, from what I remember, high resolution). This was summer of …
... have to jump down a vertical cliff and I think there ...Disassembled gamesIs there anywhere that has disassembled games to see how they work? Games like Avalon with the scrolling screens and games that scroll large maps lik…
Is there anywhere that has disassembled games to see how they work? Games like Avalon with the scrolling screens and games that scroll large maps like Alchemist?A few questions about ZX Spectrum assemblyHi, I have a few questions about ZX Spectrum assembly language programming: - What's the best assembly tool for ZX Spectrum? I tried a bit the ZXSpi…
... a bit the ZXSpin integrated assembler and it seems to be ... though. Is there another better assembler than that?
- I would ... bit how to use Zeus Assembler. Is there any documentation or ... tutorial?
- The ZXSpin assembler has directives? I would like ...clang/llvm backend for Z80?Every so often I feel tempted to revisit assemblers/compilers etc. I had (for unrelated to Z80 reasons) the need to have a look at the clang compiler…
... out a pretty decent Z80 assembler). Now if z88dk could use ...LOAD "" CODE - Blind Alleycame across [B]Blind Alley[/B] in the archives, and both tzx/tap versions only have Bytes header, no Basic loader with autostart - please, anyone, ho…
... that started only with the assembler part and no foolproof Basic ...Faulty grey +2, or not?While I?m still fighting with two to three grey +2 computers, which doesn?t give a video signal, I received another grey +2, which acts very strangel…
... from coloured, blinking blocks to vertical stripes etc. In maybe one ...
