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Fastest way to write something to screen$Hi, I just got pasmo.exe and start playing with attr scrolling, well, not scrolling, just write different values to a block and see if I can introdu…
... routine too long for a relative jump). Without unrolling at all, you ... -
WarningWarning Some games such as "Cyclone" WILL NOT run on a +2A. I have tried numerous times, and every time the load fucks up resulting in a 48K BASIC …
... Interrupt routine where a negative relative jump branches back to Costa's ... -
Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
The problem was the djnz spritedraw. It's just a relative jump isn't it? (+ or - 128bytes?).The loop must be too big. -
Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
[QUOTE=48K]The problem was the djnz spritedraw. It's just a relative jump isn't it? (+ or - 128bytes?).The loop must be too big.[/QUOTE]
If that was the problem, I'm suprised your compiler isn't warning you of the fact? -
Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... the problem was the DJNZ relative-jump size, Pasmo wouldn't produce ... -
Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... the problem was the DJNZ relative-jump size, Pasmo wouldn't produce ... -
Z80 vs. 8080.[QUOTE=obo]... because 8080 is pretty much just a cut down Z80.[/QUOTE] Really? So what's been cut, and why? Hang on, didn't the 808 evolve from the…
... IX and IY, along with relative jump instructions (including DJNZ). Off the ... -
Checksum RoutinesHi there everybody, Does anyone have an 'off the shelf' assembler routine for generating checksums? Thanks Jim
Checksum RoutinesHi there everybody, Does anyone have an 'off the shelf' assembler routine for generating checksums? Thanks Jim
Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…
... ), click on absolute address or relative jump to inspect memory contents (spin ...Mysteries of Electricity QuizA little fun quiz that I know the answers to, but may lead to some head scratching and disbelief, but there's easy experiments than can be performed …
... negative charge, the spark should jump to the positive of the ... terminal, the + and - only indicate relative potential.
[quote]
jump into the hole and NOT ...Spherical ObjectsMort has scanned in Popular Computing Weekly 30-10-86 and I have been re-united with one of my short programs. [url]ftp://ftp.worldofspectrum.org/pu…
... it as I miscalculated the relative jump not realizing that my assembler ...hardest level on manic miner?Thanks to the snapshot feature on the emu, I have now completed this game. back in the 'old days' I couldn't even get past Eugene's Layer, which is p…
... , there's a pixel perfect jump required onto a moving platform ... you jump off again.
Everything else is a relative doddle ...problem using FRAMES to generate 'random' numbersI realise the pros use bytes from ROM to get their random numbers, presumably because they want to use FRAMES to synchronise the printing and avoid s…
... can?[/QUOTE]
All relative Jumps - JR xx - are slightly ... - JP xx - because the jump is relative to the program counter. However ... you can only do a relative jump from PC-128 to PC ... condition is met and the jump taken, or the condition is ...Need Help with codeHi there, let me preface this by saying I'm NOT an old school computer guy though I do remember using the internet before the WWW and my first comput…
... ,($+2) are conditional relative jumps. However, they only jump to the next ... instruction, so the jump is pointless. What the (e ...Sequels of games converted from arcadesMany Speccy games were converted from arcades. Some of them became popular and had sequels but only on computers (those sequels didn't exist on arcad…
... , was nonetheless also a close relative of Nekketsu Kōha Kunio ... the Attack Left / Attack Right / Jump button combo...
Hmm ...Sequels of games converted from arcadesMany Speccy games were converted from arcades. Some of them became popular and had sequels but only on computers (those sequels didn't exist on arcad…
... , was nonetheless also a close relative of Nekketsu Kōha Kunio ... the Attack Left / Attack Right / Jump button combo...
Hmm ...Game clichWe all know about movie clich?s, e.g. guns never run out of ammo regardless of how many shots are fired; the Eiffel Tower can be seen from every wind…
... .
3. You can jump ten feet in the air ... of where you actually are relative to them, but their missiles ...[BASin] Bug report and question[B]1. Bug report:[/B] BASIC Editor behavior I'm using a variable to store the contents of the BC register. But the BASIC editor works strangely. I t…
... =rahtgaz;329011]
[B]Assembler - Relative Jumps[/B]
You ... range, as JR uses a relative displacement. Given that is an ... ] use JR $+4 for your jump forward by 2 bytes (remember ...[BASin] Bug report and question[B]1. Bug report:[/B] BASIC Editor behavior I'm using a variable to store the contents of the BC register. But the BASIC editor works strangely. I t…
... range, as JR uses a relative displacement. Given that is an ... ] use JR $+4 for your jump forward by 2 bytes (remember ... , JR cc, DJNZ) accept a relative parameter and not an absolute ...[BASin] Bug report and question[B]1. Bug report:[/B] BASIC Editor behavior I'm using a variable to store the contents of the BC register. But the BASIC editor works strangely. I t…
Any relative jump should indicated using $+(relative jump) i.e. $+4.
... absolute for certain instructions and relative for others.
Anyway ...[BASin] Bug report and question[B]1. Bug report:[/B] BASIC Editor behavior I'm using a variable to store the contents of the BC register. But the BASIC editor works strangely. I t…
Well I don't mean EVERY relative jump but what I do mean is that if you wish to jump forward 4 bytes then use JR $+4 rather than JR 4.
It's getting late now and I'm starting to talking gibberish...[BASin] Bug report and question[B]1. Bug report:[/B] BASIC Editor behavior I'm using a variable to store the contents of the BC register. But the BASIC editor works strangely. I t…
... to go - you specify a relative address that way. Marko has ... /> Bear in mind that to jump 2 bytes forward, you would ...[BASin] Bug report and question[B]1. Bug report:[/B] BASIC Editor behavior I'm using a variable to store the contents of the BC register. But the BASIC editor works strangely. I t…
... two already, if a forward jump is made.
I ... going to accept labels in relative jumps, then we should accept ...Strange but true things that you've experienced?On Monday I had one of those days where you just shouldn't have got out of bed. I won't bore you with the details, and I've sorted most things out, b…
... guts to jump.[/QUOTE]
It's all relative. Relative to the ... you moving relative to the train - the air. If you jump straight ... thing that matters is velocity relative to the airmass from an ...
