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A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... a call to the colour routine[/QUOTE]
Sure, that ... parts were executed inside the interrupt, there would be no practical ... -
Maritrini and Cray 5 loading problemsHas anyone else here had issues loading either of these on a 128k? No matter what I try, both these games refuse to load properly. I can get both t…
... interrupted by the vertical retrace interrupt in the middle of your ... , and the interrupt handler might call a G+DOS routine to perform ... .
So, the "REUBICA" routine should be changed to something ... -
A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... 'm studying how to implement INTERRUPT routines.
You can set ... + 256, can you place your routine in the 32768 RAM address ... -
A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... 'm studying how to implement INTERRUPT routines.[/QUOTE]
Even ... ZX BASIC provides its own interrupt mechanism, programs using BIFROST* would ... + 256, can you place your routine in the 32768 RAM address ... -
A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... ZX BASIC provides its own interrupt mechanism, programs using BIFROST* would ... out you can place your routine at 32768 or near that ... -
A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... specific memory address because the interrupt vector is location dependent, thus ... . Though if you make your interrupt vector a tiny bit of ... before you get to your routine.
There is a ... I glued in an IM2 routine completely compiled in ZX Basic ... -
Maritrini and Cray 5 loading problemsHas anyone else here had issues loading either of these on a 128k? No matter what I try, both these games refuse to load properly. I can get both t…
... RAM1, where the music player routine resides - My ISR pages RAM1 ... mean, [i]when[/i] an interrupt occurs, RAM0 is always the ... -
A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... . In this case, sub-routine "BIFROSTstart()" could make the ... memory to set the interrupt vector every time it' ... need a separate initialization routine and the overhead would ... without recalculating addresses with sub-routine "BIFROSTfindAttr(lin, col)" for ... -
BorderTron 3000A little bit of speccy-related fun for a Friday afternoon... I've knocked together a program for Windows which I've called Bordertron 3000 (a suitabl…
... an IM 2 routine, you can share the interrupt vector table and ... -
Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... much slower because the copy routine runs under IM2. 7K is ... data to be copying under interrupt, as it will take well ... -
ESXDOS v0.8.0 released (with NMI Browser)Hello, To celebrate the speccy's 30th birthday, here's the latest version of ESXDOS for DivIDE users. The full changelog is too long to post here, s…
... can at least use the interrupt to time the routine. -
Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... runs as an interrupt mode 2 service routine and uses POP ... the buffered display and the routine will
automatically ... /> jp 56 ; exit via BASIC interrupt handler
blit: ... jp im_main ; jump to main interrupt handler
org ... -
ESXDOS v0.8.0 released (with NMI Browser)Hello, To celebrate the speccy's 30th birthday, here's the latest version of ESXDOS for DivIDE users. The full changelog is too long to post here, s…
Question about 2-channel beeper musicI confess I haven't tried all the available beeper utilities and software. I always found music software confusing and trackers are not for me. I kno…
... , a 2-channel, interrupt-driven time-limited routine should be quite straightforward ... you're happy with the routine taking over 50% CPU time ...Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... an interrupt. There has to be some kind of a delay routine ... between 0 and the delay routine, it is better that it ...Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... an interrupt. There has to be some kind of a delay routine ... between 0 and the delay routine, it is better that it ... raster thing? My screen copy routine was just a test one ...question re. STR$ bugCould someone point me to whereabouts in the ROM this goes wrong? [code]PRINT PAPER 5;1;STR$ 234[/code] (Only the "1" prints in cyan.) It's not the m…
... should be cancelled but the routine should do a HALT if ... in use to give the interrupt a chance to test the ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... /> stk ld sp,0 ;exit routine
ei
ret
routine I can get 290 chars ... the screen within a custom interrupt (just a RET). Wonder if ... be useful as a screen routine?Between interrupts and handlersSee there's this short period of time immediately after an interrupt comes but [i]before[/i] the control is transferred to an interrupt handler, abou…
... Tstate already part of the interrupt it self, the actual beginning ... several Tstates, so is the interrupt handler starting Tstate.
routine can be made to start ... from Jan Bobrowski shows a routine that returns at exactly 46T ...Simple explanation of interrupts (in the context of Z80/Speccy)I wondered if somebody on here could explain in simple terms how interrupts work on the Speccy and where interrupts are source from. Are they a natur…
... a triggered and acknoledged interrupt causes the Z80 to ... is the address of the interrupt service routine.
The ... and you cannot trigger an interrupt manually (but you can ... "simulate" an interrupt by calling directly the interrupt handler, for ...Simple explanation of interrupts (in the context of Z80/Speccy)I wondered if somebody on here could explain in simple terms how interrupts work on the Speccy and where interrupts are source from. Are they a natur…
... a triggered and acknoledged interrupt causes the Z80 to ... is the address of the interrupt service routine.
The ... "simulate" an interrupt by calling directly the interrupt handler, for example ... />
Does the interrupt push the registers and the ...64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…
... feasible is this? Could an interrupt-driven routine be used to, for ...Sending key presses to the spectrumfor a project I want to send automated keyboard presses to the ZX via a micro-controller. Is it possible to send these through the expansion slot? …
... tied to this condition. The interrupt code in the microcontroller runs ... cycle (700ns).
[code];Interrupt latency: min=10, max=24 ... Spectrum running the ROM keyboard routine, which changes the row being ... than the standard ROM keyboard routine.Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... with 128 rom because routine for return from NMI ... But after press SPACE this routine refresh all register and original ... to program/game with disable interrupt.
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[B ...redirecting Z80 sub-routine CALLsI'm working on changing a TR-DOS disk program to work from standard +128k tape and thought that rather than painstakingly working through the code ma…
... could install some automatic redirection routine so that whenever the PC ... it would jump to my routine instead. This would be just ... the address and trigger an interrupt), the rest you could do ...(Re) building a ZX Spectrum laserharpThe Cambridge show is nearing, and I want to bring my laserharp with me. Why? Because it's built around a ZX Spectrum +2: [IMG]http://benophetintern…
... number DAC changes per Z80 interrupt.
It's easy to ... that is needed for the routine itself.
As you ... is pressed, the machine code routine continues on the Z80 interrupts ... pressed instead, the machine code routine stops too.
In ...
