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Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... room design and produce a two room demo.
2 ... mean that I can copy two bytes at a time just as ... -
Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... mean that I can copy two bytes at a time just as ... (#8000), HL
requires two separate accesses to memory - one ... Z80 to fetch it in two lumps of 8 bits.
Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... mean that I can copy two bytes at a time just as ... numbers to memory faster than two 8-bit numbers since the ... and the latter at least two.DivIDE and RWAP's DiwIDE*Opps, sorry, wrong forum, this thread must be in hardware topic.* I was planning to get a divide from Rwap, but I'm too afraid of long way the devi…
... stack by as much as two bytes will in some cases corrupt ...basizx newsHello. I've uploaded a new version of basizx. Now there is also an Amstrad CPC incarnation, able to LOAD and SAVE +3 basic files in disc. And the I…
... with a "header" - two bytes form the line number, two bytes the length (including ...basizx newsHello. I've uploaded a new version of basizx. Now there is also an Amstrad CPC incarnation, able to LOAD and SAVE +3 basic files in disc. And the I…
... with a "header" - two bytes form the line number, two bytes the length (including ...Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…
... bombs #7BB5 (31669) =current , next two bytes are the bomb routine and ... then there's the two values from the post above ... ) #0E #80 (routine) then another two 5s the 2nd of which ...If a C64 can do it...Forgive me if this isn't the right section. We've seen coders surprising us over and over again with excellent demos and things that a few years ago…
... check em both out, and two sets of new syntax will ... format. Integer variables take up two bytes to represent values 0-65535 ... . Floating point takes up 5 bytes in Sinclair basic and some ...Currah MicroSource emulationIt appears to be impossible to emualte the MicroSource in software on the ZX Spectrum SE as hardware polling is required. The following patch is not …
... (11182) and dropping a few bytes of code at 0000h to ... for information, you may be two bytes out. This could be the ... of it;s first 8 bytes of ROM?
[b ...Question about serial numbers, and issue marques.Hi, I don`t know if you can help me with this little question, but here goes. The spectrum computers have coloured serial numbers on the bottom of th…
... which slides everything up by two bytes. This agrees with the addresses ...PZX file format draft[QUOTE=Andrew Barker;186084]To this date, there is no rival format for TZX, despite people saying they can do better. Well the challenge is on, prov…
... 32768T) pulse takes only two bytes at maximum, instead of ... which can't fit in two bytes. These are now encoded ... as six bytes, this might bring it ... down to four bytes. However I don't ... . So utilizing just simple two symbol dictionary, this would ...How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... next 8 pixels, it fetches two bytes -- the byte of mono pixel ... row gets displayed twice in two adjacent even and odd TV ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... . A pointer variable needs two bytes of memory to store a ... the address since integers are two bytes in size.
... equal the number of bytes between the two addresses. The difference ... equals the number of bytes divided by two.
One ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... causes the compiler to allocate two-bytes of memory to hold the ... complete pixel row by writing bytes to the display address ... one pixel row by writing bytes to the buffer address, ... characters, single UDG bytes have to fatted up into two bytes. The subroutines ...8-bit or 16-bit registers?I'm playing around with writing a Speccy emulator for mobile Java at the moment. I did a quick and dirty port of Qaop, which does run but at less tha…
... access the high and low bytes of a short"[/i]
two bytes then try to write a ...First steps in Z80 machine codeI never got into machine code much back when I had a speccy, as I didn't have any development tools at the time. The only machine code I'd previousl…
[QUOTE=Arjun;200317]
Two days ago I finally decided ... have to now write to two bytes per sprite line", for a ... sprite that straddles two "columns". It's great when ...Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …
... first four (or is it two?) bytes of its output, which isn ...He's back......and he's got a new trick! AY Chip here. I've been away far too long. I would like to announce 'HatStand': for no adequately explored reason, I h…
A few questions about machine codeOh no... another noob. I'm giving my first steps in assembler (finally, after 20 years stuck in BASIC). I read a SU article explaining that if I wan…
... jump the Program Counter back two bytes to run the LDIR instruction ...Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…
... stored number took up 5 bytes, and a comma one byte ... I wonder what the other two bytes are for?
Nothing ... have to use an inefficient two-byte POKE to RESTORE the ...Trying to emulate the DivIDE on SpinI have this .iso image that's supposed to be used on a cf card: [url]ftp://ftp.untergrund.net/users/gasman/zx/divip_let_forever_be.zip[/url] Since …
... for me to make the two-byte fix to the binary ... problem is figuring out *which* two bytes...MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]
... easy to do. I wrote two drivers - one for multicolor and ... content of this table (384 bytes). In fact, position of the ... is done only by changing TWO bytes.
Source is available ...How could you hear if loading BASIC or MC?When loading a Spectrum program from tape you could usually hear from the sound if it is a BASIC or is some machine code program *. My question is, w…
... as a sequence of five bytes used for the actual computation ... sequence is always two zero bytes, then the number in two bytes, then a ... , where the frequency of zero bytes is typically much smaller.splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…
... library code to generate mask bytes.
SPCClipStruct / SPClipStruct are ... />
I can think of two ways to do this. The ...
SPTileArray ds.b 512 ; two bytes for each character
}
splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…
...
SPTileArray ds.b 512 ; two bytes for each character
}
Minigame Compo 2007Hi there, also this year, there'll be a minigame competition, open to all 8-bit computers and consoles. It consists on writing games whose size (…
Hey, you don't think we're going to give up that easily do you? :-)
Haven't had chance to try this yet, but inspired by [url=http://www.muppetlabs.com/~breadbox/software/tiny/teensy.html]Brian Raiter's even more evil ELF hacks[/url], I wonder ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... for a total of 96 bytes. But I'm only seeing ... 's doing but with the bytes missing some things may be ... first two bytes in the first DEFB line and the first two bytes in ... else due to the missing bytes. Although there aren't any ...Microdrive CATIs there a way in Basic to obtain any more useful info on the contents of a Microdrive? File size, head info for example? Also, is it possible in ge…
... the entire buffer with only two bytes spare.
You can send ...Isometric games map formatI'm interested in your opinion: What is the best way to store map data for isometric games ? SOmething like Head over heels ? I read in one place t…
... to fit each entry within two bytes, which would give you 128 ... in it would be 100 bytes.
Alternatively, your raw ... 512-bytes-per-room will probably compress ...Overflow Flag QuestionHello all, After a long hiatus (lost all code when my MacBook was stolen) i've gone back to the drawing board and am writing a Z80 emulator in REALb…
... takes as operands the 3 bytes involved (in this case, oldRegA ... /> // If we are adding the two bytes we have an overflow if ... sign bits of the 3 bytes (if 0 then the sign ...
