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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 ...Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…
... 3-byte FRAMES system variable is copied to the system variable SEED.
Otherwise ... /> Q. How often is the system variable FRAMES updated?
A ... . On a European system, the low order byte will ...ZX-PC InterfaceRight - i'm 34 and I cant take the pain of waiting for tapes to load any more - somethings gotta give ( either the tape deck or me ). I've seen a 'Z…
... could even use a new system variable (even NMI-ADDRESS) to make ... A GAME, ALTER SYSTEM VARIABLE, SAVE TO PC, SET SYSTEM VARIABLE GAME BACK, DO ...Emulator File types...SNA/TAP/TZX/Z80/ZXS All I knew about the Spectrum was how to play games on it, but since being introduced to pc emulations back in '97 I've always w…
... their random number generators using system variable FRAMES, whose value depends on ...New - BASin r13a is available for downloadHi all, Here's the latest BASin. Mostly just bugfixes, but also now has the upgraded UDG editor which can now edit multiple UDGs on one editing gri…
how to pass arguments from Basic to MC ?can someone explain me (or give some link) how to pass arguments from basic to machine code? i mean something like this: PRINT USR xxxxx, arg1, arg2:…
... address nnnnn, look up the system variable DEFADD. The value of your ...New - BASin r13a is available for downloadHi all, Here's the latest BASin. Mostly just bugfixes, but also now has the upgraded UDG editor which can now edit multiple UDGs on one editing gri…
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... and update the timer in system variable FRAMES. Since 0x38 lies in ... ). Under normal operation the Basic System is in "im 1" mode ... constant rate.
[*] The Basic system's interrupt routine at 0x38 ...Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…
... /> And of course no certain system variable change .Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…
... to index to the FRAMES system variable (among other things).Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…
... to index to the FRAMES system variable (among other things).[/quote]
for a stupid: what?s NMI?erhm, yes, I?m not familiar with it... :rolleyes: I know the function of a hardware ?snapshot? button from Didaktik M/Kompakt, but I?m not familiar…
... that you could set a system variable and the Z80 would jump ... on an NMI, unless that system variable was zero, when nothing would ... the ROM, it ignores the variable if it is non-zero ...z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…
... getk() and fgetc_cons read the system variable LASTK for keyboard input. This ... write the key read to system variable LASTK. It also means that ... stored the last keypress in system variable LASTK. By executing in_GetKey() in ...CLEAR does not RESTORE the DATA pointer??According to the Spectrum manual, one of the things that a CLEAR command does RESTORE the DATA pointer. Either it doesn't actually do this, or some…
I compiled this list of ones that I had come across for css. However they are more an indication of last-minute changes than any poor standards. The book remains one of the best manuals ever.
The ZX81 manual had a minor error in the RND explanation ...Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…
Graphics in Basic??What is the fastest way to draw high rez graphics in Basic. Andrew.
... to go. There is a system variable that points at the start ... new start address into the system variable to select another bank of ... minus 256 into the appropriate system variable. This way you have access ...Graphics in Basic??What is the fastest way to draw high rez graphics in Basic. Andrew.
... to go. There is a system variable that points at the start ... new start address into the system variable to select another bank of ... minus 256 into the appropriate system variable. This way you have access ...Graphics in Basic??What is the fastest way to draw high rez graphics in Basic. Andrew.
... location and change the Chars system variable the UDGs do not change ...Graphics in Basic??What is the fastest way to draw high rez graphics in Basic. Andrew.
... location and change the Chars system variable the UDGs do not change ... different. CHARS variable (at 23606,23607) sets the system font location. UDG ...Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…
... significant byte of the FRAMES system variable for a change. It changes ...
