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yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... why do you insisting on interrupt-based multitasking. see, any real ... be some 'watchcat' in the interrupt routine, so you can forcibly kill ... -
Zynaps: is it handcoded?sorry if this question was already answered. but i did some inspection of Zynaps code and it seems to me that it's screen drawing (and maybe other pa…
... here and there (even from interrupt routine, afair), something like spagetty or ... -
So what is the best Spectrum?I've had a search and even though i can remember a similar thread somewhere I'll twist it a bit. Whats the best "unmodified" Spectrum? (modification…
... test because it uses an interrupt routine that takes up more T ... keypad reading code in the interrupt routine, whereas the the +3 is ... disk access code in the interrupt routine. So if you put the ... -
Random numbers...Hi Folks, I am not an expert when it comes to random numbers. If I have the RANDOMIZE statement the beginning of a program and then proceed to gene…
... . This assumes the basic rom interrupt routine is running becasue it is ... -
Spectrum - Show in London area, April 2012Hello Folks, we have been already discussing in another thread. Here I simply want check the interest.So the question is easy: If we will organize a …
... /off messages in an IM2 routine to avoid buggering up the ... while drawing animations in an interrupt routine which you can have the ... -
GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…
... X or Y direction, an interrupt is generated (there are two ... for X and Y). The interrupt routine must read the relevant PIO ... -
Why doesn't my routine work?I have a "level" defined by 504 bytes (28 squares across x 18 squares down) I'm trying to write a routine that will take an X,Y coordinate in pixels…
... /> ; --------------------------------
; THE 'MASKABLE INTERRUPT' ROUTINE
; --------------------------------
; This routine increments the Spectrum's ... the USA ).
; Both this routine and the called KEYBOARD subroutine ... -
New WIP underway - 'Dingo'.Hi, Prepare for a long post. Perhaps I can even challenge ewgf here. :razz: Anyway, I've been meaning to get into Z80 programming and making a game…
... a slightly more fancy sprite routine, but I'll do that ... for a pre-shifted XOR routine. Just set up the registers ... . Assuming you're using an interrupt routine which increments the FRAMES system ... -
AY Magic version for ZX81 was bornModified Ay magic ,my previous interface for zx48. On board, ay chip based on Zonx interface but with stereo output and rampack 16 or 32 kilo on boa…
... is used by zx81 NMI interrupt routine as a jump vector, hopefully ... but since as only the interrupt routine can stop the player part ... />
and lastly a special interrupt handler is written with minimal ... -
128k RAM paging from BASICI'd always thought that OUT had to be used to page RAM, which from BASIC would be an "OUT 32765,ddd" command, although I don't know if just doing tha…
... ]
I think the interrupt routine resets it, doesn't it? -
Getting the contents of tablesHi All, I'm risking a potentially daft question here as it seems pretty fundamental but here goes: What's the best way of pointing register pairs a…
... the ROM, and in the interrupt routine - so you cannot use it ... the ROM routines (including default interrupt handler).
Disable interrupts ... />
Or provide your own interrupt routine, which you are [i]bound ... -
SP1 library questionsI'm working on my first game. I've not written a game since the late 1980s and that was a text based multiuser dungeon for BBC Micros with econet... …
... interrupts (the normal Spectrum ROM interrupt routine was being run). I'm ... guessing that something the ROM interrupt routine does was affecting SP1.
routine? -
SP1 library questionsI'm working on my first game. I've not written a game since the late 1980s and that was a text based multiuser dungeon for BBC Micros with econet... …
... (the normal Spectrum ROM interrupt routine was being run). I' ... guessing that something the ROM interrupt routine does was affecting SP1.< ... I have my own IM2 routine?[/QUOTE]
Nope ... need to synchronize with the interrupt although doing so *may* ... -
Is it possible to access the +3 disk drive via m/c in USR0 mode?Is it possible to access the disk drive of the +3 via m/c +3DOS calls when running in USR0 mode? I ask because I'm having an awful lot of trouble ge…
the motor off is done in the interrupt routine. Perhaps the interrupt is happening after you have restored the stack and before you return :-? -
What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…
... /> You will see how the interrupt begins much later in the ... in both machines, the keyboard interrupt routine is almost the same.
PFlagsIs there an explantion somewhere of what bits mean what in the printing flags? 1 23658 FLAGS2 More flags. 1 23693 ATTR P Permanent current col…
... been modified so that the interrupt routine tests this flag and if ...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 …
... is to write a simple interrupt routine that just does a RET ... . Then make your main routine HALT and wait for 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 …
... every sprite, I have a routine to erase it from the ... calculate-rotate sprite. So, my interrupt routine usually goes as follows:
interrupt routine to play music, and perform ...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 …
... rotate sprite. So, my interrupt routine usually goes as follows:
interrupt routine to play music, and ... />
Your first Sprite routine! Could you share with us ... just the print / screen update routine.
Cheers
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 …
... every sprite, I have a routine to erase it from the ... calculate-rotate sprite. So, my interrupt routine usually goes as follows:
interrupt routine to play music, and perform ...z88dk sticky?I've just tried to PM Alcoholics Anonymous and couldn't because "Alcoholics Anonymous has exceeded their stored private messages quota and cannot acc…
... . Push corresponds to interrupt driven keypresses where an interrupt routine sends characters to ...How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... keep calling that particular ROM routine every 20ms. You'll also ... typically do is put an interrupt vector table from 65024-65280 ... nnnn instruction to my real interrupt routine. Or fill the table with ...How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... keep calling that particular ROM routine every 20ms. You'll also ... typically do is put an interrupt vector table from 65024-65280 ... nnnn instruction to my real interrupt routine. Or fill the table with ...How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
The default interrupt mode won't affect your ... normal operations, even allowing for interrupt stack usage.
Without ... suggestion and use your own interrupt routine under IM2, or if you ...How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... genuinely have to have an interrupt routine (e.g. my one byte ... pulse.
When an interrupt does occur, it PUSHes the ...
