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Which is the most technically accurate Spectrum Emulator?Ok, which is the most technically accurate Spectrum Emulator? Please don't just vote but give reasons why.
...
BIT n,(HL)
CPI
CPD
INI
BIT n,(IY+d)
CPI
CPD
IND
LDD
LDIR
CPI
CPD
INI
The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... data byte into checksum
cpi ; inc hl, dec bc, set ... =330091&postcount=29]the CPI trick[/url] :-)Spin Assembler DirectivesLeading on from [URL="http://www.worldofspectrum.org/forums/showpost.php?p=402514&postcount=65"]jp's recent post in Spin 0.7 Public Testing thread[/U…
... : 11+($FFEDB9 shl 8)), (S: 'CPI'; I: 12+($FFEDA1 shl 8 ...Spin Assembler DirectivesLeading on from [URL="http://www.worldofspectrum.org/forums/showpost.php?p=402514&postcount=65"]jp's recent post in Spin 0.7 Public Testing thread[/U…
... : 11+($FFEDB9 shl 8)), (S: 'CPI'; I: 12+($FFEDA1 shl 8 ...Bit functions speedI just stared nonplussed at the documentation for the bit functions. Apparently, if you're using the accumulator, using AND and OR is faster than se…
... obvious) is the use of CPI to test if BC is ... this:
[code]
cpi
jp pe, loop ; or ...Who would you like to see in 10 and 11 Downing Street...?Okay, so the general election has been called and we've had the final PMQs and things are really kicking off now. Counting in the possibility of a Co…
... favourite measure of inflation to CPI that doesn't include housing ...Who would you like to see in 10 and 11 Downing Street...?Okay, so the general election has been called and we've had the final PMQs and things are really kicking off now. Counting in the possibility of a Co…
... , which is why we have CPI and RPI inflation measures, isn ... favourite measure of inflation to CPI that doesn't include housing ... /> I think I read that CPI is the main measure in ...FMV on +3eOK, so about 6 months ago i posted here that i got full motion video on +3e, with a bunch of scr files called passion. I added the glider rider music…
The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... with a specific font (ega.cpi, loaded using "mode con codepage ...world cup in the UK ?personally I don't want to be lining the pockets of fifa "officials" and their "family" much like the Olympic family.. where few of the people who ar…
... ://www.transparency.org/policy_research/surveys_indices/cpi/2009/cpi_2009_table[/url]
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
Port 254 emulation problem. Help, please ...Sorry, but my english is not pepfect. I have a problem and need in professional help. I have developed hard-soft emulator of ZX Spectrum 48. The link…
... IN A,(n) instruction:
CPI XH,0X40 ; test if the ...Thinking in Assembly (first efforts)The following is one small routine to educate myself on a few concepts (jumps, flow control, routines, CPI): [code]searchmem xor a …
... the entire memory
.search cpi ; a-(HL)
jr z ... the entire memory
.search cpi ; a-(HL)
ret po ...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?
... repeat until BC=0.
CPI Compare location (HL) and acc ... BC.
CPIR Perform a CPI and repeat until BC=0 ...Good character sets ?Just wondering if anyone had any favourite character sets ? :) The one in SE basic is quite nice and I'm aware (I used to have it in my head I'm sur…
... =http://www.seasip.info/DOS/CPI/]GSANS and TSANS[/url].
CPI/gsans.png[/img]
CPI/tsans.png[/img]
Asking for help: ZXBC to ASM routine translationHallo, In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler [code] sub light(x as uinteg…
Asking for help: ZXBC to ASM routine translationHallo, In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler [code] sub light(x as uinteg…
... in level
candles2:
cpi
jp po,candlesend
candles2:
cpi
jr nz,candles3
Machine code loopsDear all, 30 years too late I know, but I'm finally starting to get to grips with Machine Code - something I could never manage back in my early tee…
...
;(some kinda code)
cpi ;or cpd, respectively
jp ...Machine code loopsDear all, 30 years too late I know, but I'm finally starting to get to grips with Machine Code - something I could never manage back in my early tee…
...
;(some kinda code)
cpi ;or cpd, respectively
jp ... such an ingenious use of CPI/CPD before. This is one ...Relocation with SDCCI desperately need auto- relocation with SDCC. Something that will compile all of my code using start address 0 and generate relocation table so that…
... ,(hl) ; remember current char
cpi
jr z, match ; found ... /> match:
dec hl ; cpi stepped hl one past last ...Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…
... did was eliminate the CPIR/CPI instructions. Their reason was "they ...Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... bc ; restore byte counter
cpi ; advance source pointer and decrement ...Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…
... addresses in HL: use the CPI instruction, which performs a comparison ... :
ld (hl), 62
cpi
jp pe, loop
Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…
Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…
Very clever use of CPI to do the loop there!
*Notes it down for future reference*Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…
[QUOTE] ld hl, 16384
ld bc, 1024
loop:
ld (hl), 62
cpi
jp pe, loop
ret[/QUOTE]
Great trick!
I've never used CPI in my life before.
But I guess I'll be using it now :)Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…
... neither uses our new friend CPI/CPD.
[CODE]21FF43 ...
