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Help?Hi All, I wonder if anyone has a few minutes to look at this bit of code I'm working on. I'm trying to move to sprites and want to do it with a scr…
... was just the low-byte of the seed variable ... incremented and the high byte was not being changed. ... just increments the single byte pointed to by HL. ... e. the least significant byte of the variable only.
back to characters.
Gigascreen - programming guideDoes anyone know of a programming guide for the 128K gigascreen screen mode, specifically a persistence colours table, some code (pref. C level or BA…
... ;Just a label, for looping back here
PUSH AF ;Store ... /> LD A,(DE) ;Get 1 byte of colour
LD (HL ... /> LD BC,15 ;Copy colour byte 15 times...
LDIR ;...to ... br />
INC DE ;Next byte in colour table
LD ...Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…
... /> pop af ;get value back
rra ;next one ... point hl at them, high byte first
ld l,( ... , is loaded with graphic byte from call goblin
... , is loaded with graphic byte from call goblin
...
inc hl ;next byte along
ld (point ...Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…
... right halves of each shifted byte.
Unfortunately, since the ... :
(1) use a back buffer for the sprites and ... !
(2) use a back buffer for the entire screen ...Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... expression, Dylan?)
So, back to the roots:
byte/bit to POKE?[/QUOTE]
Flip Screen vs ScrollingWhich do you prefer? I've always liked flip screen games but I had a C64(spit) owning friend who hated them with a passion.
... fetch the graphic data one byte at a time, then shift ... or right, then write it back into memory. [I]R-Type ...Beepola Source CodeAs I haven't done much with it for a few months, I'm releasing the Beepola source code in case anybody wants to play about, add to, or otherwise use …
... TRUE, the player should loop back to the defined loop start ... SongData, BOOL bSongDataOnly, int iAddress, BYTE cBorderCol,
BOOL bLoop, int ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... ld (row), a ; write it back
ret
... (de), a ; write it back
inc d ; point ... (de), a ; write it back
inc d ; point ... ld a, (hl) ; read byte at destination
rrca ; shift ... (de), a ; write it back
inc d ; point ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... /> I went back to storing the characters twice in each byte, and ...50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... you do PUSHes back-to-back, they write a byte every 8T, taking ... all to the same 2-byte instruction, so it all slows ...SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... /> ld (hl), c ; low byte of the output routine
ld (hl), b ; high byte of the output routine
ld (hl), c ; low byte of the input routine
ld (hl), b ; high byte of the input routine
back again and
push ...Worst Spectrum fighting game?My money goes on [url=http://www.worldofspectrum.org/infoseek.cgi?regexp=^Uchi+Mata$&pub=^Martech+Games+Ltd$&loadpics=1]Uchi Mata[/url], a Judo game …
... />
back on track.. there is a video of bug byte kungfu ...Buying GamesWas reading a thread the other day (can't recall which one now - think I'm suffering RAM pack wobble) which put me in mind of the whole process of bu…
... very small computer shop (Dragon Byte in Morley).
There ... good ones that week). Rush back home and spend all night ...Small Machine Code Routines Which Maybe UsefulAs part of creating Flynn's Adventure in Bombland I created a lot of little routines to do all sorts of things. A lot of these I created based on inp…
... ld a,d ; 4t - bring back char byte
srl c ; 8t ... ld a,d ; 4t - bring back char byte
srl c ; 8t ... ld a,d ; 4t - bring back char byte
srl c ; 8t ... ld a,d ; 4t - bring back char byte
and c ; 4t ... ld a,d ; 4t - bring back char byte
srl c ; 8t ...Small Machine Code Routines Which Maybe UsefulAs part of creating Flynn's Adventure in Bombland I created a lot of little routines to do all sorts of things. A lot of these I created based on inp…
... MEM_KEYS is within a 256 byte block
; part taken from ... /7t - if the same then back up to the top to ...Elite's iPhone/iPad Spectrum Emulator updated... with Manic Miner, Monty and more!This was updated earlier today: [URL="http://itunes.apple.com/gb/app/zx-spectrum-elite-collection/id391336343?mt=8"]link[/URL]. Now includes Manic M…
... Vol.2
====================
Back to Skool by [b]MICROSPHERE ... b] MICROSPHERE[/b]'s Back to Skool being the highlight ... surprise). Personal Favourites are Frost Byte, Earthlight, Micronaut One, Fat ... happened to Pyjamarama?) and Back to Skool by [b] ...Elite's iPhone/iPad Spectrum Emulator updated... with Manic Miner, Monty and more!This was updated earlier today: [URL="http://itunes.apple.com/gb/app/zx-spectrum-elite-collection/id391336343?mt=8"]link[/URL]. Now includes Manic M…
Brilliant update!!! I'm so pleased about Cauldron and Frost Byte!!! And of course Back to Skool, Everyones a Wally and Fat Worm Blows a Sparky!writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... to simply process the bytes, byte by byte as opcodes, avoiding disassembly ... everyone had an eprom burner back in the day ;) ), and indeed ...writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... , starting at the zero'th byte, as Z80 instructions.
4 ... /port contention.
Come back when you've done that ...This might be something new[img]http://www.711chan.org/test/src/130427925559.png[/img] Have a look at this screenshot of my emulator ZX82. Notice the copyright message? That's…
... put a 40-bit result back where it's expected. The ... by the FPU as double byte op-codes giving you another ... . You could use a double-byte instruction to say OpenGL stuff ...Windows updates pain.What a pain they are,recently i had to reinstall vista,and for security/virus reasons downloaded the all the fixes,lucky to have broadband but the do…
... you simply unarchive the copy back onto your drive, and your ... the same, without a single byte changed, as it was when ... image. So you'll be back to Vista, or whatever ... s well worth creating a back up image in case ... you later need to revert back to how the hard ...multiple songs with savage enginesorry friends, another thread with my stupid questions. maybe wos should introduce a noob section for people like me? :oops: anyway, how does using …
... add the poke to jump back to the first savage song ... is not on a 256 byte boundary (e.g. $8000, $8100 ...Best way to organise a multi screen game?Hi All, Does anybody know ay good ways to organise large multi screen game? Or any links to useful texts on the matter? In my previous single scr…
... save 4 tiles in a byte.[/QUOTE]
that's ... out to me, and looking back-each screen on JSW only ...Best way to organise a multi screen game?Hi All, Does anybody know ay good ways to organise large multi screen game? Or any links to useful texts on the matter? In my previous single scr…
... out to me, and looking back-each screen on JSW only ... one screen has circa 160 Byte of data.Serial protocol, help!Hi, simply trying to find best way to transfer programs from PC to real ZX Spectrum for testing purposes. Under Windows I tried using Spxfr and it w…
... /> Tomaz[/QUOTE]
OK, back tracking a little. I did ... - it only has a one byte buffer!
Set Realterm ...
