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TimingHey All, Is their away of obtaining timing information on ZX128k other than addresses 23672->23674. Basically I would like to identify every 100th …
As for the Vertical blanks, I just waited for a state change in the timer system variable, that changes every 1th of a sec, although its not politically correct.
GBNvK. -
42 column text, Sinclair Print Utilities, etcI'm currently developing the next of the ZXIF text adventures - "43 Minutes" and, as a side issue, I'm really interested in 42 column text for this g…
... . You can point the CHARS system variable at your own character set ... -
Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??
... was meant to check the system variable NMIADD (#5CB0) and jump to ... -
Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??
... was meant to check the system variable NMIADD (#5CB0) and jump to ... -
VSYNC FunctionI have written a VSYNC function, so that I can clear the screen before redraw without flicker on the screen, I do this by peeking at the address 2367…
... keyboard and updates the frames system variable -- pure overhead from Basic. It ... halt) was reading the frames system variable to see if an interrupt ... -
MC 101Hello Group Members: Can't spectrum MC be embedded in a BASIC program
... , as pointed to by the system variable PROG, and add three or ... -
An intriguing question...Well, intriguing for me anyway. As we all know, when calling a Machine Code function from BASIC, we use the USR (address) function. But for this to …
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RANDOMIZE USR do nothing with it.
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RANDOMIZE will set the value as seed for random numbers, in the appropiate system variable. -
Character SetAlright, this may not be the right forum for this question (it does sort of relate to a game which I'm trying to get working properly - long story) -…
The system variable is CHARS with low byte ... original Spectrum manual contains these System Variables and is available in ... -
RZX for Sabre WulfI was just about to send an RZX for Sabre Wulf to the RZX Archive when I noticed they don't accept Ultimate's (and other companies' who haven't given…
... started in. Restoring register and system variable values might be a first ... -
RZX for Sabre WulfI was just about to send an RZX for Sabre Wulf to the RZX Archive when I noticed they don't accept Ultimate's (and other companies' who haven't given…
... wrote:
Restoring register and system variable values might be a first ... -
loading techniques I never worked outFirstly, how do games that load with LOAD "" CODE autorun? Secondly, how do you save a basic program as a CODE file (but not as BASIC compiled into …
... the memory from the first System Variable up to E_LINE (which comes ... -
Pixel LimitIF Y3<192 THEN : LET x2=INT (128+X*A*SIN A): LET y2=INT (Y3): DRAW INK
... screen by POKEing to a system variable (I forget which..)
Setting the borderCan someone tell me best way to set the border to a given colour using machine code. Its there an operating system call or can I load up a memory loc…
... colour and set the BORDCR system variable (23624) accordingly.
Port ...Speed of blinking L on a Speccy???Friend of mine and I have had a "discussion" (close to a game of fisticuffs) about how fast it takes to invert the attribute for the blinking L (or t…
... flashing colors. Like, via a system variable... It would certainly have been ...Speed of blinking L on a Speccy???Friend of mine and I have had a "discussion" (close to a game of fisticuffs) about how fast it takes to invert the attribute for the blinking L (or t…
... flashing colors. Like, via a system variable... It would certainly have been ...Speed of blinking L on a Speccy???Friend of mine and I have had a "discussion" (close to a game of fisticuffs) about how fast it takes to invert the attribute for the blinking L (or t…
... flashing colors. Like, via a system variable... It would certainly have been ...New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…
... FLAGS
This system variable contains various flags controlling the ... Basic system and generally should ... in 23560 (the LASTK system variable) and bit 5 ... respectively. POKEing this system variable will affect the appearance ...Famous fans of SpeccyI was wondering if you, european people, can tell me about european personalities - think in artists, politicians, bussinessmen -, that love the Spec…
Aha, just remembered another - Terry Pratchett. Anyone who names a mountain range after a Spectrum system variable must be a bit of a fan.Famous fans of SpeccyI was wondering if you, european people, can tell me about european personalities - think in artists, politicians, bussinessmen -, that love the Spec…
... about it. Was Ramtop a system variable on the ZX81 too?
Pixel LimitIF Y3<192 THEN : LET x2=INT (128+X*A*SIN A): LET y2=INT (Y3): DRAW INK
Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
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The system variable 'SCR CT' is stored at ...JSW - Is this possible?There's an object in the Conservatory Roof which I reckon cannot be collected without losing a life. There's a snapshot taken in the Conservatory …
... POKE 23609,255 (the PIP system variable) will change the sound emmited ...print at line 22 and 23I have a faint recollection of POKES to allow print at 22,x and 23,x, anyone know what they are? (rather than using the print #0 #1 stuff..)
You can POKE system variable DF_SZ with zero to allow ...Adding commands to Spectrum BASIC?Are there any articles on how to do this? I think it could be done by making the error trapping routine point to your own commands, but not sure exac…
... set up a 16-bit system variable VECTOR and after the ROM ...how do i read the keyboard in assembly? here is the code i tried writting to find out the value of a key call 28f (hex) loop: ld a,255 cp e jr z loop ld (50000),e ret notes from what i …
... it is stored in a system variable (=23560), which you reset, you ...how do i read the keyboard in assembly? here is the code i tried writting to find out the value of a key call 28f (hex) loop: ld a,255 cp e jr z loop ld (50000),e ret notes from what i …
... it is stored in a system variable (=23560), which you reset, you ...FrameSyncIt was many many years ago since i programmed assembly on the spectrum but I just picked it up again for fun. Now this is one thing I can't remember…
... keyboard and updates the FRAMES system variable. It normally takes about 1000 ...42 column text, Sinclair Print Utilities, etcI'm currently developing the next of the ZXIF text adventures - "43 Minutes" and, as a side issue, I'm really interested in 42 column text for this g…
... in RAM just after the system variables and before the BASIC ... bytes from 23568 is the system variable STRMS, which holds the adresses ...
