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Atic Atac speed.Dear all, Excuse the noob question, but does anyone know how fast Atic Atac runs at? What I mean is, frames per second, or the amount of pixels the…
... /> SetupInts: ld a,OP_JP ; jp opcode
ld (INTVECTOR),a
next time
ld e,a ... -
[BASin] Bug report and question[B]1. Bug report:[/B] BASIC Editor behavior I'm using a variable to store the contents of the BC register. But the BASIC editor works strangely. I t…
... . If you look at the opcode of the above code when ... determine the address of the next instruction, as at that point ... -
Tips on (dis-)assembling Z80 instructionsedit: Naturally I managed to post this in the wrong forum. I'd much appreciate it if any moderator would move it to the development section. For the…
...
[entry in label table] opcode is output
you ... in a node where the next character is describing none of ... start point and compute particular opcode.
on Z80 instruction's ... -
+3 dead(!)Hi, When I turn on my +3 I see only white and black strips (vertical) on screen any idea on how to fix it? Thank you in advance Chris [IMG]http:…
... " (floating bus), which is the opcode of RST 38h
So the next instruction to be execute is ... -
iPhone ZX Spectrum EmulatorI see this was posted on YouTube a couple of days ago - [url]http://www.youtube.com/watch?v=En1Q5MLS2EE[/url] Although his website says 'soon' ([url…
... < event_next_event ) {
var opcode;
[/code]
Now ... (tstates < event_next_event ) {
var opcode;
[/code]
What ... ?
A tip for next time you rip off somebody ... -
tricks to simplify codingWhen i started with programming in assembler i had very simple approach to do things. Just shifting bytes around, doing simple tests and so... Later …
... *next_in_spr; // +0 BIG ENDIAN ; next sprite char within same sprite ... res3; // +17 typically "CALL nn" opcode
void *draw; // +18 ... ; & sp1_cs.attr_mask of next sprite occupying the same tile ... -
Minor Update to Gasman's Midi2BEEPDon't know whether this is worthy an announcement, but for those of you who enjoyed Gasman's midi2BEEP utility, a new variant has been made called mi…
... column 1 matches a known opcode, and treat it as one ... go at doing that the next time I play with that ... -
Machine code[CODE] OPCODE HEX ADD LD A,05 3E05 F000 LD B,00 0600 F002 INC B 04 LOOP F004 CP A,B B8 F005 JP NZ,LOOP C2F003 F006 LD B,00 0600 F009 LD …
...
actually gets the opcode for the add, then the ... any carry, and do the next.
This is the ... it, and then grab the next and add it with carry ... -
RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... PC register, so the first opcode fetch will be to location ... belong to the HALT (looped) opcode fetch. In my opinion, the ... fetch is started at the next PC address
2) the ... current fetch and executes the opcode.
I know that ... -
Fastest way to mirror a byte?I.E. turning 01100000 into 00000110, in assembly. I'm trying but I suck at stuff with rotation and the carry bit. Any pointers?
... instruction is once for each opcode fetch. Almost exclusively this is ... know hardware and the very next part of the sentence says ... -
IN or INKEY ?just curious which is better to use.. I have a menu done.. and use 6/7 to go up down it + space to cycle thru the options (using inkey).. obv. if I w…
... ;adjust to opcodes
ld (OPCODE),a
rst $20
call $2307
OPCODE nop
jp STAKA ;direct ... sp,hl
rst 32 ;next char in line (DATA)
Fastest way to mirror a byte?I.E. turning 01100000 into 00000110, in assembly. I'm trying but I suck at stuff with rotation and the carry bit. Any pointers?
[QUOTE=antoniovillena;571491]Yes. The opcode is for a JP Z. ... Doesn't found any better opcode to skip 2 bytes. Fortunetly ... take place.[/QUOTE]
Next two values point to ROM ...Arkanoid Hack - Your Sinclair Smash TipsRemember that Arkanoid hack in YS Smash Tips that didn't work? It does now... [CODE] 10 REM ARKANOID HACK 20 CLEAR 65535: LET C=1: LET D=23295 …
... pokes into place.
Next bit is the pokes themselves ... length
inc ix ; address next decrypter length
ld b ... value
cp $f9 ; correct opcode?
jr nz,chksp2 ; no ... hl,bc ; add together for next decrypter address
pop bc ...A "bit" of a curiosityHaving to use a bit of m/code to do the AND in that key check function, I was prompted to revisit the "AND,XOR,OR,...for BASIC" topic and came up wit…
... = bit to address
c = opcode = 0(RES), 1(SET), 2 ... SUB FN c(val0,bita,opcode,bits,nnnn,0)
....
Graph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…
Disentangling your code looked too much trouble, so I wrote a quicker BASIC version then an assembler version of that (although that's rather slow even so). It could be written to run more quickly by not using the FP calculator but I expect that it would ...Graph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…
Here's a much quicker version; the BASIC now only takes 50 seconds, and the assembler is reduced from 318 secs to 17 secs. There's still scope for further improvements. The significant change is that it only executes the inner Y loop with valid plot points ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... br /> sll e ; opcode for undocumented instruction "SLS ... add a, a ; check next bit
ret nz ... add a, a ; check next bit
ret nz ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... br /> sll e ; opcode for undocumented instruction "SLS E ... add a, a ; check next bit
ret nz ; ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... defb $cb, $33 ; opcode for undocumented instruction "SLL E ... add a, a ; check next bit
ret nz ; ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... br /> sll e ; opcode for undocumented instruction "SLS E ... add a, a ; check next bit
ret nz ; ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... br /> sll e ; opcode for undocumented instruction "SLS E ... add a, a ; check next bit
ret nz ; ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... defb $cb, $33 ; opcode for undocumented instruction "SLL ... add a, a ; check next bit
ret nz ... add a, a ; check next bit
ret nz ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... defb $cb, $33 ; opcode for undocumented instruction "SLL E ... add a, a ; check next bit
ret nz ; ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... br /> sll e ; opcode for undocumented instruction "SLL E ... add a, a ; check next bit
ret nz ; ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... br /> sll e ; opcode for undocumented instruction "SLL E ... add a, a ; check next bit
ret nz ; ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... br /> sll e ; opcode for undocumented instruction "SLL E ... add a, a ; check next bit
ret nz ; ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... defb $cb, $33 ; opcode for undocumented instruction "SLL E ... add a, a ; check next bit
ret nz ; ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... br /> sll e ; opcode for undocumented instruction "SLL E ... add a, a ; check next bit
ret nz ; ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... jr nc, copy_byte_loop ; next bit indicates either literal or ... br /> sll e ; opcode for undocumented instruction "SLL E ... add a, a ; check next bit
ret nz ; ...
