-
Run BASIC program by R. USR xxxxxGuys, please help. Suppose I have BASIC program in my Spectrum 48K starting with line 10. I'd like to start it by RANDOMIZE USR xxxxx. Which paramete…
Run BASIC program by R. USR xxxxxGuys, please help. Suppose I have BASIC program in my Spectrum 48K starting with line 10. I'd like to start it by RANDOMIZE USR xxxxx. Which paramete…
Run BASIC program by R. USR xxxxxGuys, please help. Suppose I have BASIC program in my Spectrum 48K starting with line 10. I'd like to start it by RANDOMIZE USR xxxxx. Which paramete…
URGENT programming question !I've gotta draw a line from machine code using the standard routine at 24B7, which expects the delta-X and delta-Y values on the BASIC stack. I put t…
Hey, mystery solved !!! I know how to do it - I push X1 and X2 on the stack, call RST #28 to subtract them, push Y1 and Y2 on the stack, call RST #28 to subtract, and call the DRAW routine.]
Can't believe it was so easy. :)compatibility between ZX computers?Hey all, I'm new here :) I was wondering about compatibility between ZX computers. Is it possible to run a game made for ZX80 on a ZX Spectrum? Or a …
...
LD A,(HL)
RST 8 etc...
If ... read #4000+Start_in_RAM_Spectrum
RST 8 needs to make a ...AssemblersOk, two quick questions for you guys: 1) Can anyone give me a link to the Prometheus Assembler ? 2) Does anyone know of an assembler that satisfies …
Sync-buzzer, interrupts and general confusionBeen wittering on about this in the Misc group, but thought it was best discussed here. Basically been trying to recreate the Sid-Sound effect from A…
... this is a single-byte RST instruction that performs a subroutine ... the Z80 will execute a 'RST 0x38' which is a subroutine ...i want to start writing my own gamesi want to start writing my own games but have no idea how. is there any downloadable dummys guides or some software that teaches u how. the only expe…
... .
(Actually it would RST 38 twice then return but ...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…
Making a mapI should learn Z80 assembly, but I don't have the time (really busy) and I feel like making a game. I've tried with Colt which gives me enough speed…
... ld a,(hl)
rst 16
inc hl
rst 16
ld a, ... c 'X
rst 16
ld a,(hl ... )
rst 16
inc hl
rst 16
inc hl< ...Making a mapI should learn Z80 assembly, but I don't have the time (really busy) and I feel like making a game. I've tried with Colt which gives me enough speed…
... efficiently translated into machine code. RST 16 is the call for ...Making a mapI should learn Z80 assembly, but I don't have the time (really busy) and I feel like making a game. I've tried with Colt which gives me enough speed…
Making a mapI should learn Z80 assembly, but I don't have the time (really busy) and I feel like making a game. I've tried with Colt which gives me enough speed…
... of these and
the RST 16 will go to the ...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…
I think you probably want RST 10 - 10 being the hex for 16.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…
... syntax is either
'RST 10' or 'RST 10H'
If you ...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…
Thanks!
yep, it should be RST 10H
and I should have know that -I put it down to a "senior moment" !
thanks Steve+D/Disciple games archive?Hi all, Having finally got my disciple to work, I'm starting to have a look at hacking multiload games. Is there any archive on the web with games t…
... the load was successful). The RST#18 is jlo's way ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... ), the processor simply executes an RST 38 instruction if an interrupt ... (0xff), coincidentally the opcode for RST 38, so the Z80 will ... executed; if there is a RST n on the data bus ... so it 7 for an RST instruction and the total is ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... executed; if there is a RST n on the data bus ... so it 7 for an RST instruction and the total is ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
According to Programming the Z80 RST instructions take 11 T states. 2 T states are added to M1 if /INT is present. Where do you think this is wrong?InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
An unconditional RET takes 10 tstates. Check your source.
Edit: Read the post, you idiot :) RET != RST.
[ This Message was edited by: Philip Kendall on 2004-07-30 23:57 ]InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... /> According to Programming the Z80 RST instructions take 11 T states ... T states are added. A "RST n" instruction does indeed take ... cycles, the peripheral supplies the "RST n" opcode. This is followed ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... /> As mentioned above, your normal "RST n" has 5 cycles of ... acknowldge, during which time the "RST n" opcode is supplied by ... peripheral to place its vector / RST on the data bus) + 2 ...I need ASM for random numberI need to generate a random pair of coardinates in asm so that x=random no between 0 and 31, y=random no between 0 and 23. Any ideas on how to code …
Hi,
You could use this one if someone founds out why it returns with a Integer Out of Range error. :(
[code]
ORG 32768
LD HL, (23672)
LD (_RANDOM_SEED), HL ; Initialize the seed for random ...I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... bug or not. The command "RST 38H" is the problem. Simply ... 38, which has the opcode RST 38H, thus making it jump ...I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
I think my RST command works OK - its just the address in memory that I jump to is wrong. All I need to know is what is the value of 38H in decimal (and RST 00h, 08h, 10h, 18h, 20h, 28h, 30h).
:)I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... ROM image, there is another RST 38H command - thus setting up ...
