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Skooldaze and Back to Skool loading problemsIve got both of these on original Microsphere release and Ive never come across two titles that are so azimuth reliant before!! I mean it has to be …
... /> For comparison, the standard Speccy ROM routine times bits at 855 T ... twice the speed of the ROM loader) which was probably too ... Software re-release uses standard ROM timings...
B -
Why no PLOT, etc. on bottom two lines?I was pondering if there was any way to get PLOT, etc. to address the full screen from BASIC without having to write a few lines of assembler to bypa…
... />
I would suspect the rom routine for draw / circle are not ... -
assembler for PcHi guys, I'm in the process of teaching myself machine code, and wondered if there is a good pc program for writing code. Or is the best thing to use…
... /> so this is calling a rom routine right? So I want to ... in my copy of complete rom disassembly and I assume I ... address of 229B but the rom routine starts at 2294 doesn't ... calling part of the rom's border routine?
Sorry for ... -
ZX-Assembler in progress...Dear readers, I just want to announce that ZX-Assembler is not longer only an idea in my mind. It's just alive. Unfortunately, it's too early to mak…
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[*] BTW calls to ROM routines should be automatically identified ... to the middle of a ROM routine like address $0e9e (that I ... a pre-defined list of ROM labels (defined with a separate ... -
TR4/TR5 replacementHi guys, I've got another Spectrum I'm working on now - an Issue 4S this time. When I originally got it, I powered it up and did the basic tests a…
... manage to get a testing ROM to load and it showed IC8 ... -
N00b question for a slow dayHi i'm messing around with basic again using Spectaculator and was wondering if somebody could remind me how to print the (c) symbol? Thanks in advan…
... upto 32767 (presumably because the ROM routine was re-used from the ... -
SPIN AssemberHi, I'm in the early stages of learning assembler, and am now looking at some tutorials from Toni Baker in ZX Computing: [url]http://wos.meulie.net…
... set of System Variable and ROM routine equates
[URL="https ... -
r-type in development for the sam coupehttp://cookingcircle.co.uk/ we need z80 coders graphics artists and audio this is the amstrad cpc 6128 version: https://www.youtube.com/watc…
... the code of the JPUT rom routine in the sam coupe please ... it is impossible for a rom routine to use the stack pointer ... -
r-type in development for the sam coupehttp://cookingcircle.co.uk/ we need z80 coders graphics artists and audio this is the amstrad cpc 6128 version: https://www.youtube.com/watc…
... - i don't think the rom routine does this so it might ... maybe its impossible for the rom routine to use the stack pointer ... -
Emulator suggestion Betadisk 48k TRDOS v4 adress redirection to Betadisk TRDOS v5Hi, may I suggest the following: As there are some older programs only running on Betadisk 48k with TR-DOS v4 and it´s adresses 15360/15363 ins…
... the central TR-DOS v4 ROM-Routine #3BFD
it´s needed ... /> LD C,7 ;set DOS routine 7 (catalogue)
CALL 15357 ...
TR-DOS v5 ROM don´t need to turn ... -
Spectrum Screen RAM layoutHi there The spectrum screen layout is rather odd. It seems to be arranged into 3 256 byte groups. If I have an x (horizontal) coordinate (from…
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Also there is the ROM routine PIXADD at $22AA
ROM Disassembly[/url]
by Dr ... -
Compression comparisonsI did some comparisons of different compression methods. To make this relevant to zx spectrum, I first gathered a corpus of relevant data: 6660 .TAP …
... worth the effort.. slightly customized rom routine (for visual effects) might be ... -
Compression comparisonsI did some comparisons of different compression methods. To make this relevant to zx spectrum, I first gathered a corpus of relevant data: 6660 .TAP …
... worth the effort.. slightly customized rom routine (for visual effects) might be ... is a variation of the ROM loader and is roughly 2800 ... 85% more than the standard ROM loader - 1500 bps if I ... -
Best Z80 Assembler for PC?There's probably already a thread for this so if somebody could please point me at it I'd appreciate it. If there isn't then please respond here wit…
... a BASIC loader. This should load code as it it were ... /TAP_format
Then try and load it in an emulator.
load' call into the ROM to load each block into ... -
Are turbo loaders worth it?I found turbo loaders fascinating and I've spent quite some time disassembling and trying different types, and they work great when I load the games …
... as it uses the standard ROM routines to save. I was ... perhaps it was just the ROM routine called from machine code. -
Are turbo loaders worth it?I found turbo loaders fascinating and I've spent quite some time disassembling and trying different types, and they work great when I load the games …
... perhaps it was just the ROM routine called from machine code.[/quote ... way even when the ROM standard loading routine is being used.
routine employed. -
Fast load of multiload games on real hardware?I was wondering if there was a hardware device that could allow fast loading of multi-load games for real hardware? I noticed a good many of the b…
... 't really speed up multi-load turbo-load stuff easily without hacking ... . For anything that uses the ROM to load, you can intercept the ... calls to the "load" subroutine and do a fastload ... once it's loaded, and load that instead. -
Where can I find accurate ROM functions map?Basically so I can avoid reinventing the wheel and just CALL rom if there is function there (for example, $203C, print function) that does exactly wh…
... pretty much guarantee that the ROM routine is going to be the ... -
Where can I find accurate ROM functions map?Basically so I can avoid reinventing the wheel and just CALL rom if there is function there (for example, $203C, print function) that does exactly wh…
... pretty much guarantee that the ROM routine is going to be the ... -
What am I doing wrong here?[code]IF INKEY$=SCREEN$ (21,4) THEN LET SCORE=SCORE+1[/code] It's delivering a positive every time.
... 's a bug in the ROM at $257D where it JPs ... . To fix it the faulty ROM routine needs to have the JP ... else write a replacement USR routine.
I wrote a ... replacement routine a while ago, although it ... -
An odd floating point error. Avoid!While working on the revival of my old game ([url="http://www.worldofspectrum.org/forums/discussion/53207/new-game-2016-revival-a-yankee-in-iraq-1992…
... don't know when the ROM routine that causes it was discovered ... -
Where does the BASIC program sit 48K Spectrum memory?Hi there First post so be gentle, I've had a spectrum since the 80's and have recently started programming it for fun again. I wrote the followin…
... machine code program in the ROM that is running - the ... different instructions, then call the ROM routine that does a PRINT or ... to write your own little routine that does repeated adding.
Then POKE in my routine, with the following changes: 0 ... -
Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…
... isn't even a handy ROM routine, as CL_LINE clears from the ... -
Communal Project for ASM NewbiesHi Folks, I tend to learn best by trying stuff and then going through the pain of it not working so that I can research and fix mistakes. I suspec…
... routine with a "jp $38" which is a jump into the rom ... interrupt routine. I'd get rid ... ; reti" unless you need the rom routine to run. -
Communal Project for ASM NewbiesHi Folks, I tend to learn best by trying stuff and then going through the pain of it not working so that I can research and fix mistakes. I suspec…
... "]
NIRVANA+ ends its interrupt routine with a "jp $38" which ... is a jump into the rom interrupt routine. I'd get rid ... ; reti" unless you need the rom routine to run.
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So where is the random number in the Speccy ?So I am messing around with ZX Spectrum Assembler and I want a random number. I looked up previous posts and one of the links said that random number…
ZX ROM in 64 characters a lineDear ZXS users, I am glad the today's release is not only concerning MB-02+ as it is normally the case with me, but it concerns really everyone, sinc…
Ok that's pretty cool indeed. How would you get this to work with Fuse? Is this not just a ROM routine? You can select ROMs in Fuse.
