-
CSW 2Have you been using csw 2 yet? I find the total pulses is sometimes wrong by 256 too short. Also there is a small shift to the right by a few sampl…
... as displaying the values as T states at 3.5MHz and displaying ... -
CSW 2Have you been using csw 2 yet? I find the total pulses is sometimes wrong by 256 too short. Also there is a small shift to the right by a few sampl…
... point in time, I don't know what to ask for ... also possible, when you mention T-States that we could calculate the ... -
ZX81 and ZX80 emulator on Spectrum 128KA couple of weeks ago we were talking about a new ZX81 emulator for the 128K. Someone beat me. More details at [url="http://www.fruitcake.plus.com/S…
... 12kHz (each pulse is ~637 T-states long). [B]After each series ... . The "pause" mentioned here isn't silence - it's simply the ... -
ZX81 and ZX80 emulator on Spectrum 128KA couple of weeks ago we were talking about a new ZX81 emulator for the 128K. Someone beat me. More details at [url="http://www.fruitcake.plus.com/S…
... LD A,E ;
JR C,L0388 ; loop back ... /> POP DE ;
JR NZ,L039C ; to BIT-DONE
CP $56 ;
JR NC,L034E ; to NEXT-BIT ... -
help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …
8*12 = 96 T states for RRA, RL B
< ... /> You see it takes 12 T states to swop each bit in ... have fewer T states for each swop. Branches take 10 T states - so there ... do a swop is 36 T-states - making it at least three ... -
Tough paging questionOK... Take this: 1. We have a program compiled and run from within GENS under a Pentagon 128K environment. 2. The program works perfectly. 3. We sav…
... than one frames-worth of t-states to render on a +3 ... $ff? If so this isn't supported on the +3 either ... -
Z80 to TZX Converter !Hey Everyone ! I have a bit of time lately and I coded a little utility that can convert the Z80 snapshot (any version, 48k and 128k supported) to T…
... the convertor. The 0-pulse T-States is a bit too low ... -
Z80 to TZX Converter !Hey Everyone ! I have a bit of time lately and I coded a little utility that can convert the Z80 snapshot (any version, 48k and 128k supported) to T…
... means the edges probably aren't quite in the same place ... bit lengths by a few t-states.
Btw, I've ... of TZX files that won't load into Spectaculator because of ... -
Z80 to TZX Converter !Hey Everyone ! I have a bit of time lately and I coded a little utility that can convert the Z80 snapshot (any version, 48k and 128k supported) to T…
... playing it back, somehow the T-States get a little bit prolonged ... find the best combination of T-States so it loads properly on ... -
Z80 to TZX Converter !Hey Everyone ! I have a bit of time lately and I coded a little utility that can convert the Z80 snapshot (any version, 48k and 128k supported) to T…
... version. The timings is 200 T-States for bit 0 and 400 ... -
Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??
... and of course the JR Z/ JR NZ NMI bug at location 006D ... -
Amiga MOD on ZX SpectrumWell, there were several question about music matters on WOS lats times, so I decided to describe some of my 'adventures', heheh, with MOD playing on…
... samples you get around 450 T-States to play with. The question ... for you). But I can't think of a good way ... -
16k/48k Sound FXI am now moving on from graphiocs to trying to build up a library of sound fx to be used with a 16k/48k Spectrum. Does anyone have any example m/cod…
16k/48k Sound FXI am now moving on from graphiocs to trying to build up a library of sound fx to be used with a 16k/48k Spectrum. Does anyone have any example m/cod…
...
noise1 dec a
jr nz,noise1
pop bc
dec a
jr nz,noise3
jr noise2
RET ...16k/48k Sound FXI am now moving on from graphiocs to trying to build up a library of sound fx to be used with a 16k/48k Spectrum. Does anyone have any example m/cod…
16k/48k Sound FXI am now moving on from graphiocs to trying to build up a library of sound fx to be used with a 16k/48k Spectrum. Does anyone have any example m/cod…
BASIC OptimisationsOk, BASin is maturing fast and now I want to add some more special "stuff". A guy called Chris requested by email that I include a REM killer, to s…
... /> All times are measured in T-States (CPU cycles) which should help ...MC 101Hello Group Members: Can't spectrum MC be embedded in a BASIC program
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 clock in the last T state of the last machine ... M cycle takes 2 more T states than usual when ?INT is ... ]
[/quote]
33 T states. RET takes 10, not 4 ... might work but it isn't the correct instruction for the ...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…
... RST instructions take 11 T states. 2 T states are added to ... part where you say 2 T states are added. A " ... instruction does indeed take 11 T states: 5 for an opcode ... . You can't just say 'add 2 T states' because the ... by the usual 3/3 T states to push PC.
...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... cycle description says that 2 T states are added to M1 to ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... cycle description says that 2 T states are added to M1 to ... acknowledge cycle. It states that two wait states are automatically inserted to ... settle) + 2 automatically inserted wait states during which time /IORQ is ... br />
Now, I don't know why it's not ...Collision DetectionHi everyone, This is my first post on WOS. Like most people here I owned a Spectrum when a teenager. At that time I was quite heavily into programmin…
... ,B
CP 100
JR NC,GE ; GREATER EQUAL
JR C,LESS ; LESS
JR Z,EQUAL
JR NZ,NOTEQ
need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
...
DEC IXL
JP NZ,DRAWMID
DRAWEND OR ... 7 ;to be adjusted.
JR NZ,DRAWSPY2
LD A,E ...
DEC IXL
JP NZ,DRAWMID2
DRAWBEG2 OR ... lines in the sprite
JR Z,RETURN ;jump to return ...
