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A SAVE routine to reduce Microdrive loading timesHello! Please i'd like to know if there is a SAVE routine written to reduce the zx microdrives loading times.
Hello!
Please i'd like to know if there is a SAVE routine written to reduce the zx microdrives loading times. -
Machine code routine neededHello! Please i'm looking for a short routine that can write the same value in a range of continous memory locations. For example, to write 255 val…
Hello!
Please i'm looking for a short routine that can write the same value in a range of continous memory locations.
For example, to write 255 value from location 40000 to 41000.
Many thanks in advance. -
looking for a vertical scrolling routinein basic or like the standard scroll? routine but the other way round with the scroll? removed (this would have to be in code). ive tried a couple of…
... or like the standard scroll? routine but the other way round ... -
im looking for a machine code star-field routineim looking for a machine code star-field routine. preferably with mnemonics.
im looking for a machine code star-field routine. preferably with mnemonics. -
Passing parameter from BASIC to assembler routineWas there a "clean" way of passing parameter(s) from a BASIC program to an assembler routine? Something like parameterising RANDOMIZE USR call? I fac…
... BASIC program to an assembler routine? Something like parameterising RANDOMIZE USR ... -
BASIC Bug: DEF FN after REMHello all, Having mused the Spectrum ROM disassembly by Drs Logan ad O'Hara, I wondered about how good ZX BASIC was at locating the DEF FN when call…
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You get .... a noticable pause and then .... 1.7973767E-16 ... be ignored, but the ROM routine that looks for DEF FN ... -
NMI Routine and Restarts in a new 128K ROMI'm presently engaged in creating AGD 5 with the intention of making it a pair of 16K ROMs for the 128K/+2. I'm fairly sure that the vast majority o…
... ROM 0 as the delay routine in RST 0 overran. Beyond ... -
PAW questionThis may not be the right place but anyways there it goes: I've been trying to figure out how to import graphic files in .SCR format in the PAW parse…
... call the machine code routine that will dump the ... is how your external routine should work because that ... machine code for our routine is. The code for ... data.
Now the routine will need to look something ... memory without even a pause in execution. What you ... -
Hook CodesIf you've dug into the Interface 1 this should be an easy question. I last had 'em circa 1990 while I can remember the things they did Start Motor C…
... ROM3 Function
---- ---- -------------- --------
1B PAUSE 19D9 1ECD 1ECF Wait for ... 1E96 call the shadow ROM routine addressed.
33 SCAN_M ---- 1FE4 ... -
Spectrum problemHi I've just been trying to resurrect my 48k spectrum. I'm having some problems loading some of my games, but if it does completely load, it crashe…
... more like a 48k reset pause it will seem - and sometimes ... manifests - at which point the routine can exit and give you ... -
Loading schemes18 years ago I hated loading schemes like Alcatraz and Speedlock because they were a b*tch to copy and became unreliable when the tape got older. Now…
... the loading routine at some point, or rather during a pause in ... -
128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …
Ah, we overlapped.
I see you used PAUSE 1 to wait for the interrupt service routine to swap pages, but my method forced the page swap by doing the OUT - is this an acceptable alternative, or is this broken? -
Insanely difficult gamesOK, folks, so we know Speccy games were difficult in general. But have you ever played some games which were totally unfair from your point of view ?…
... way and time - without any pause to take breath i.e ... help (slowdown plus 'save snap' routine) and without cheating, he/she ... -
Games and Programs written in BASinHi all, The new version of BASin is about to be released in the next few days or so, and I'm gathering up example programs to include with it. I se…
... funny problem in 9a: The pause command doesn't always work ... as expected. Especially pause 0. If I use this ... is piped through the ROM routine using a trap. I may ... -
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... br />
; **** START INTERRUPT ROUTINE ***
MainLoop:
; ...
; **** END INTERRUPT ROUTINE ***
Start:
... ; 8 = RO:Pause Counter
; 9 = Pause Target, when it hits ... -
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
...
; **** START INTERRUPT ROUTINE ***
MainLoop:
; ... br />
; **** END INTERRUPT ROUTINE ***
MoveAndPrintSprite:
... 8 = RO:Pause Counter
; 9 = Pause Target, when it ... -
TZX formatQuick question: What is the current pulse level at the start of a TZX file? Difficult question: Why does the format say that the final pulse shoul…
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The ROM save routine doesn't add any extra ... a problem because the trailing pause specified by the TZX block ... render a complete non-zero pause after the last block in ... file, to let the loading routine see the additional high-to ... -
GraphicsI can't find this posted anywhere else, but how do you use graphics, other than circle, pixels and lines? For example, how do you draw a filled box o…
... /> draw 0, 150, c
pause 0
cls
next ... , I cloned the spectrum draw routine to use in my own ... -
Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…
... the disassembly of the SAVE routine in the ZX81 ROM, counting ... each bit there is a pause of 4354T, then another wave ... -pulse and 4689T for the pause.
I haven't ... -
Assistance with IM2 routineI subsequently got a working IM2 routine.
... counter-loop to handle the pause:
...
ld b ... certain about calling a ROM routine from within an interupt though ... -
The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
... is quite a CPU intensive routine) doesn't interfere with the ... waits for the emulation to pause (while waiting for synchronisation to ... -
Trying to experience nostalgia!! Mp3s needed!!!I've been trying to get audio files (mp3 or wav) to work on my real old sinclair 48k. I've tried making them from my old tapes of which I have many, …
... . In short, we measure the pause before and after the tones ... clarification from a load/save routine may get us timing accurate ... -
The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
... out in the save/load routine, if they left it in ... can fix them with the pause ms before and after the ... -
Delay routine requiredI'm putting together a short routine to play some Beep style music. I need to be able to pause between notes when required. These pauses are defined …
... 'm putting together a short routine to play some Beep style ... need to be able to pause between notes when required. These ... 'm after a routine that will allow me to pause for the ...
