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RST 16 with TASMCan any body tell me what is wong when I assemble this test code with TASM : ;print a long string "help me" start .org 32000 ld a,2 call 5633…
... ,(de)
inc de
RST 16
jr loop
data ... : unrecognized argument. which is the RST 16
Is it something ... -
Using RST 16 and udg flickerHi there! I'm using UDGs and RST 16 to make a simple canyon bomber game. I've got the game mechanics working ( finally ) but now I'd like to make …
... /> I'm using UDGs and RST 16 to make a simple canyon ... -
Programming MC : first stepsIsn't nice to collect all kinds of short routines to help making the first steps into MC for everyone who never touched MC? What I mean is mostly th…
... " ; display number
rst 16 ; with print
ret ... ; save registers
push bc ; save registers
... /> pop bc ; retrieve registers
pop hl
MC TipPlace your MC tip here: Here is my first: When using alternate registers (EXX) the HL register must not be affected on return to BASIC. Also the IY…
... :
When using alternate registers (EXX) the HL register must ... using ROM-routines (i.e. RST 16).
or return to BASIC ...Keys redefine routine and key check.I have written some asm code which allows me to redefine keys (for a game etc.), and also allows me to be able to check any keypresses for the redefi…
... don't save/restore any registers on entry/exit, so ... ret z ; so exit
rst 16 ; print the character
jr ... $bf
key_pause_pattern: defb 16
key_quit_port: defb $df< ... br /> key_quit_pattern: defb 16
msg_up: defm CC_AT,7 ...Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …
... eg be constrained to certain registers) because it is part of ... .
[/quote]
RST are fast single-byte calls ... RST locations, and this is what is done on the Spectrum. RST 16 ... (print) and RST 48 (calculator) are ...Where to start?Hi all, I wanna start coding something for the speccy. I have good experience at C/C++ and some other languages. I have coded asm on pc too, and ma…
... having lots and lots of registers to play with :-) In my ... than the Spectrum's own RST 16 routine! (Probably didn't help ...IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …
... "packs" targeted RAM and the registers in and around "reserved" ROM ... and associated CHANNEL information for RST 16 to work? WOuld games be ...Using INPUT without clearing last two lines of screen?I'm trying to print to the 22nd row of the screen using the ol' print #0 trick. Unfortunately, I require user INPUT which seems to wipe out the botto…
... and DE are more useful registers for things your code block ... zero
ret z
rst 16
inc hl
jr ...DivIDE QuestionHi all, I've been trying to work out how the DivIDE works and after reading and re-reading the DivIDE programming model document by Zilog I think it…
... functions to do the display (RST 16 etc) or do I need ... NMI code.
3) push registers to stack + your NMI code ... 48rom you must pop all registers + jump to "map-off area ...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 …
[code]
; PRINT AT Y,X full screen
; Y = B-reg, X = C-reg
; 0Machine 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 …
Now with saving temporary colours
[code]
; PRINT AT Y,X full screen
; Y = B-reg, X = C-reg
; 0Machine 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 …
... lines of code?[/QUOTE]
RST 16 also handles colour, it's ... print to the screen via RST 16 then the characters will inherit ... can alter them easily with RST 16 and the graphical codes.
registers (BYTEvalues) rather than 5 bytes ...Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
... ) you can use the normal RST 16 for all characters on the ...Keys redefine routine and key check.I have written some asm code which allows me to redefine keys (for a game etc.), and also allows me to be able to check any keypresses for the redefi…
... don't save/restore any registers on entry/exit, so ... ret z ; so exit
rst 16 ; print the character
jr ... $bf
key_pause_pattern: defb 16
key_quit_port: defb $df< ... br /> key_quit_pattern: defb 16
msg_up: defm CC_AT,7 ...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…
... t save/restore any registers on entry/exit, ... z ; so exit
rst 16 ; print the character
... $bf
key_pause_pattern: defb 16
key_quit_port: defb $df ...
key_quit_pattern: defb 16
msg_up: defm CC_AT ...Up/Down Left/Right scrollCan anybody give a newbie some pointer to simple one char scrolling by pixel? I've looked at a lot of resources, but as you can imagine, it's all a …
... and again - multiplying by 16. Why multiply this number by ... need to fiddle around with 16 bit
;arithmetic ... in one pair of registers and add it ... ...basically just replaces the RST 16 command - I won ... character just like PRINT....or RST 16)
pop de
Can't Get My Simple Code To RunHello again, I'm trying to run the following simple code: [code] org 32768 main ld b, 21 ; x coordinate is …
... printing a string, a few registers have already been corrupted.
RST 16 with a terminator byte or ...Can't Get My Simple Code To RunHello again, I'm trying to run the following simple code: [code] org 32768 main ld b, 21 ; x coordinate is …
... printing a string, a few registers have already been corrupted.
RST 16 with a terminator byte or ...The incredible shrinking screendumpIn this topic I stated that I would be impressed if the screendump could be smaller than 37 bytes. [url="http://www.worldofspectrum.org/forums/viewt…
PRINT AT in assembler Hello everyone, I am very new to this forums. Like perhaps many others I had a Spectrum as a child and did pretty much simple BASIC programming, bu…
... />
LD a,22
RST 16
LD a,10 (x ... -coord)
RST 16
LD a,20 (y ... -coord)
RST 16
LD a,65 (character ... code)
RST 16
I might have ...Aggravating problem with screensI've rewritten my Sam C runtime emulator code ( well almost ) to allow me to use my own routines for blitting sprites onto the screen, storing tiles …
... your program calls ROM routines ( RST 16 and jump
table vectors ...Assembler snippetsI was just thinking that a thread for small but useful assembler snippets to do useful things would be cool for people learning z80 coding. Not to me…
designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
... programs?
there are 16 registers, 0 to F
if ...Machine code sub routinesHi everyone, I have noticed that in machine code you can call different "preset" routines like rst 16 or something, or call 6533... where can i fi…
... call different "preset" routines like rst 16 or something, or call 6533 ...
