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DATA BIN - How to read the contentOkay I hit a snag with my Image to ZX Spec program that the plot/draw command eats too much memory. So I want to use DATA BIN to insert converted jp…
... only 19 UDGs available in +3 BASIC (21 in 48k BASIC).
set as you reach the end ... screen high up in memory and then use a machine code stub to ... -
how do i....yank open a game and look at the stuff inside? (im sure there is a technical term for this.) someone mentioned that 'jet set willy 5, ZX heroes' has…
... subjective here... the original Jet Set Willy does a perfectly adequate ... command I think, which would in principle let you use whatever ... getting into the realms of machine code hacking, which is way beyond ... -
River Raid Tech DemoJust a little something to look at. Enjoy. [URL="http://www.joefish.co.uk/speccy/Joefish_River_Raid_Tech_Demo_01.tap"]Joefish_River_Raid_Tech_Demo_…
... I did try writing some machine code multi-colour routines like this ... optimising and timing code based on the Z80 instruction set.
... though I have worked in programming for various communications and ... difference between developing the code for a game and ... -
I want a DivIDE but....I need help, I want to get a DivIDE but I need some advice. Which one do I go for DivIDE or RWAPS DivIDE+ (when they become available). Which firmwa…
... /disk. If you're interested in developing disk-based programs, rather ... provides a comprehensive set of APIs for the machine-code programmer (see here ... still available (see recent thread in hardware section, I think). -
I want a DivIDE but....I need help, I want to get a DivIDE but I need some advice. Which one do I go for DivIDE or RWAPS DivIDE+ (when they become available). Which firmwa…
... . If you're interested in developing disk-based programs, ... provides a comprehensive set of APIs for the machine-code programmer (see ... available (see recent thread in hardware section, I think).[/ ... with the system, maybe code some utilities, forget about ... -
Arcade Game Designer 2.0 releasedI know dozens of you downloaded the previous version of AGD. Well, you can put it away now because I've made some major improvements to that version…
... the equivalent m/code to give different keys set?
... read in the user events which are compiled into machine code every ... time you make a change in AGD, ... However, redefining the seven keys in AGD won't move anything ... -
z80 program to BASIN?I have a BASIC program with UDG:s loaded in a z80 snapshot file. I would like to edit the program with Basin, but I wonder what must be done before…
... adding to the value held in the UDG sysvar, and return ... know I can start a machine code program with RANDOMIZE USR memory ... 15616 on a stock 48k machine, and USR "A" is 65368 ... place my own new character set at some high memory position ... -
z80 program to BASIN?I have a BASIC program with UDG:s loaded in a z80 snapshot file. I would like to edit the program with Basin, but I wonder what must be done before…
... know I can start a machine code program with RANDOMIZE USR memory ... be used as an argument in a keyword. So you PRINT ... place my own new character set at some high memory position ... ROM manages the machine stack, which "grows" in memory and can trash ... -
Jumping to BASIC after importing 23296,1703Sorry for the confusing title. :-D Now that I've learned how to stop a game from starting after loading (in Fuse and Specemu), I have a few more que…
The following code will set the stack and ERR_SP system ... 128K machine, it will leave the speccy in 48 BASIC:
[code]
ld sp, hl ; set the stack
ld hl ... ; address of STMT-RET in ROM
[/code]
Hope that ... -
48K BASIC to ZX81 BASIC conversion possible?Looking for an automated way of converting a BASIC program done on a 48K Spectrum to one for the ZX81. It's obvious that some things cannot be done o…
... to colour (BORDER, PAPER, INK), sound (BEEP, 128k PLAY), ...
* Replace unquoted apostrophe in print statements with a new ... * Renumber things so they are in steps of 10
< ... (insert stuff about PEEK/POKE/machine code here - someone with more knowledge ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... own code in the gap between screens, and the extended UDG set at ... .[/quote]
Providing you set the attribute map to something ... standard printing routines will still set the bitmap, so you ... [quote]You would need a machine code routine to relocate any BASIC ... -
Speccy games programmingI've got a question. Where games written in pure machine code or was it a level higher with Assembly language being the choice? I always thought it…
... compiler many more possibilities in generating good output ( ... in terms of performance to have a large set ... on in order for it to generate code competitive ... few basic rules in writing your code so that the ... routines or your own machine code routines to do the ... -
POKING graphicsI remember using binary code (in BASIC) to POKE graphics (thanks Input magazine!) Using a FOR..NEXT loop you would POKE each square in the 8X8 charac…
... ]
Is there a way in assembler to save memory by ... put your graphic data anywhere in memory, as long as you ... correspond to PRINTable characters - but machine-code games ignore the PRINT mechanism ... to customise the entire character set, not just the UDGs. -
Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…
... text substitutions on the source code. Things like removing comments ... might include c code in another file, code in a library, etc ... object file, which is machine code but with external references not ... of memory have you set aside for malloc? Perhaps ... -
Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…
... .
Obviously I'll set a much higher address, maybe ... plan ahead. On a 128k machine a good approach might be ... level data and level specific code in the extra rampages and then ... hl
; code to page in music code stuff into top 16k ... -
What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... learn machine code and am trying to get a development environment set ... then moved onto the assembler in BASin which is pretty good ... on it..
[CODE]
ld a,2 ... cool'
eostr equ $
[/CODE]
[/QUOTE]
... -
What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... habit of looking for redundancy in your code. As your projects become ... program like this, to work in 'real machine code' is wonderful :)
set/reset the Z flag[/COLOR ... /> I suppose at the moment machine code seems to be just so ... -
Converting games from tap to dskHi to all from Greece, Being an old Speccy user and now owner of most models of Spectrum (48k , 48k+ , 128K, +2 grey and +3) , I desided to salvage m…
... than the 'current' bank set by POKE 23388. Here's ... did for Jet Set Willy 128: Any code intended for banks ... sideways RAM with a short machine-code program. So load the ... the top.
The machine code in copy.bin would then go ... the correct memory bank set up. -
using a divide+ on different machines?so I got a 48k that works today.. finally :) but the divide just acts as a reset switch when I hit the NMI button.. on my +2 (black issue) it boots t…
... haven't used my DivIDE+ in a while, but I'm ... the 48K editor but 128K machine code stuff, pagination, etc still works ... go back into 128K mode in a second time.
A) one set is for +3 and +2A ... -
Most impressive game you've ever seen which has been written in speccy BASIC?What's the most impressive speccy game you've ever seen that's been written solely in speccy BASIC? +3 Basic or 48k basic. No machine code routines…
... in the Bytemaniacos competition were made of pure Basic with no machine code ... screens/in-game/i/InsertCoins.gif[/IMG]
Jet Set ... /showscreen.cgi?screen=screens/in-game/j/JetSetBasic.gif[/ ... /showscreen.cgi?screen=screens/in-game/j/JohnnyChispas.gif[/ ... -
Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …
... about 10 kB for game code (I learnt to my ... surprise that the actual code takes the smallest ... work on any 128K machine, and not just the ... amp; graphics to be running in uncontended memory - for speed ... bits of memory into set places in 'reachable' memory, which ... -
Note to self: Check other's pokesI was bored yesterday evening so decided I wanted to learn a little as well as achieve something, so decided to disassemble Manic Miner (bug-byte ver…
... myself Z80 machine code in the late 80's and set myself the ... of cracking the colour code entry in Jet Set Willy.
... Just searched for the text 'Wrong code ... learned the text search trick in a Your Sinclair how to ... -
Note to self: Check other's pokesI was bored yesterday evening so decided I wanted to learn a little as well as achieve something, so decided to disassemble Manic Miner (bug-byte ver…
... taught myself Z80 machine code in the late 80's and set myself the ... of cracking the colour code entry in Jet Set Willy.
... Just searched for the text 'Wrong code ... the text to "Right code entered"? That would work. -
Note to self: Check other's pokesI was bored yesterday evening so decided I wanted to learn a little as well as achieve something, so decided to disassemble Manic Miner (bug-byte ver…
... taught myself Z80 machine code in the late 80's and set myself the ... of cracking the colour code entry in Jet Set Willy.
... Just searched for the text 'Wrong code ... learned the text search trick in a Your Sinclair how to ... -
Help fix this keyboard read program?This code runs in an interrupt routine with DI. What would be the simplest way of making it so it doesn't auto repeat a keypress? [code]keys: ld a…
... -modifying code :-p It represents either a shortcoming in the instruction set (and ... code ; address of code for state
[/code]
Then your state machine ... /> jp (hl) ; jump to state machine code
.state8
OR in a IFHi guys, I have a string that is defined by the user. I want to have an IF that does something like IF string<> a OR b OR c THEN goto 10 Hope that m…
... in 16K ;)
RANDOMIZE USR x
starts executing machine code ... to have interrupts enabled, be in interrupt mode 1, and restore ... the value that was in the IY register before returning ... what value is in IY to begin with and set it back ...Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... /> All will be interfaced in a [I]classic[/I] ... don't plan to set up an installer to ... example, horizontal text scroll in Dan Dare (bottom on ... not smooth enough like in SpecEmu or Spectaculator ... completely replaced by my x86 machine code core.
...New member here. And a spider! :)Hello everyone. My name is Sekrets. I'm quite a lonely individual, searching for a digital home where I might find fellow speccy enthusiasts to adopt…
... cub scout badge!
Machine code had always seemed way ... about on zeus assembler in an emulator, I have ... crossassemblytools, other an assembler in an emulator.
I ... 16k in size due to the way tables were set ... up. The versions on WoS in MC ...Smiler 2: In the CityHi All, I've now completed my next game, "Smiler 2: In the City". It is available for download here:- [url]http://wonko.gotdns.org/sinclair/smile…
... machine-code player (pre-written by Sergey Bulba) and AY music data in ... has to do is set up a trivial interrupt ... s remarkably easy to set up from C programs. ... to see a pure machine code re-implementation with ... finished Pacman clone written in assembler which I ...
