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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 ... -
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 ...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…
... a,"0" ; display number
rst 16 ; with print
ret ; Back ...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…
... using ROM-routines (i.e. RST 16).
or return to BASIC ...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…
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 ...Print text in assemblyHello, a perhaps simple question: I would like to print a text string on the screen and I wonder how to do that in the most easy way? I seem to re…
... kind of ROM based code, RST 16 (?), but can that print more ...Optimization for this codeHello, I have done and submitted a small program for the CSS Crap Game Compo which involves a machine code routine. The z80 with BASIC and MC is av…
... 255
ret z
rst 16
inc hl
jr ... /> text defb 22,6,15,16,4,18,1 ; AT 5 ...quick - Zx80 ASM questionWhile I am ploughing through lots of ASM listings, one of my earlier adaptation attempts surprised me [B][asm code][/B] [code] org 32768 start: ld…
... done if it is
rst 16 ; spectrum: print the character in ...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…
... 5633
CC_INK: EQU 16
CC_PAPER: EQU 17< ... ret z ; so exit
rst 16 ; print the character
... $bf
key_pause_pattern: defb 16
key_quit_port: defb $df< ... br /> key_quit_pattern: defb 16
msg_up: defm CC_AT,7 ...probably a stupid question about RST16I'm using the 'hello world' code borrowed from [url=http://equant-retrochallenge.blogspot.com/2008/07/zx-spectrum-assembly-programming-under.html]her…
... done if it is
rst 16 ; Spectrum: Print the character in ...Newbie says 'Alreet?'Hiya dudes, Just dropping a line to say hello as i've decided at 33 to try and fulfill a long time ambition to write a speccy game in machine code..…
... move round the screen using Rst 16, but I feel i'm ...What's wrong with this code ?OK, working my way through Jonathan Cauldwells 'How To' tome and I can't get the following to run in either spin or basin. ( iused the assembler in b…
... rst 16
ld a,(plx) ; player vertical coord.
rst 16 ... s horizontal position.
rst 16 ; set the horizontal coord ... ; SPACE character.
rst 16 ; display space.
...Printing textThis is probably quite a basic question, or there might be something obvious I'm missing. I'm looking for an economical way of printing formatted te…
... a
ret z
rst 16
inc hl
jr ...
defb 22,1,20,16,1,17,7,19,1 ...16k programmingHi all, If I want to code something for a 16k (or any spectrum) my understanding was that if I CLEAR below 24064 and put all the code above it up to…
... be ok. My demo used RST 16 but no other ROM calls ...trying to read keyboardI have the speccy in interrupt mode 1 I used 'IM1' in assembly language then Im printing the contents of memoryu area 23560 to the screen: [quote] l…
... control code for AT.
rst #16 ; print it.
ld a ... ,#10 ; vertical position.
rst #16 ; print it.
ld a ... ,#10 ; y coordinate.
rst #16
LD A,#0 ...Simple text scrolling routine...I'm having trouble writing a very simple text scroller, the idea is to use the ROM printer routine to print 32 characters each time the routine is ca…
... an AT 1,0 using RST 16 or whatever, but I've ...z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... want an asterisk here.
rst 16 ; display it.
call ... ASCII code for space.
rst 16 ; delete old asterisk.
... xcoord) ; vertical position.
rst 16 ; print it.
ld ...Rom routine for pixel addressDear all, Having my bi-annual 'lets try machine code' project again and have come up with a problem with the pixel address rom routine at 8874. …
High score table routineI wrote this general purpose high score table routine. It stores 5 scores and displays them alongside the player names, which are 8 characters long. …
... pointed at by HL
RST 16 ; print the character
... total
PUSH AF
RST 16 ; show character
POP ... ; if so, return
RST 16 ; print the character
JR ...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 …
... for AT.
rst 16 ; print it.
rst 16 ; print it.
... ; y coordinate.
rst 16 ; print it.
...counting in assembleri have this program which cycles through the character set. how do i do this with numbers say 0 to 65535? org 40000 ld b,120 ld (23612),a L…
... /> RST 16
LD a,00
RST 16
LD a,00
RST 16 ...
ld a,c
rst 16 ...
