-
simplest method to pass a string to m/code?The statement "RANDOMIZE numvar+USR mc" is a simple way of passing a single numeric parameter to a m/c routine, as mc can retrieve numvar from the to…
... $;: but that needs some prefatory code to adjust the machine stack ... needs two statements.
* RANDOMIZE CODE "s"+USR mc: but that ... needs some prefatory code to set up a location ... -
What's wrong with this code ?OK, working my way through Jonathan Cauldwells 'How To' tome and I can't get the following to run in either spin or basin. ( iused the assembler in b…
...
Anybody help ?
[CODE] org 30000
; We want ... basexy ld a,22 ; AT code.
rst 16
... /> ld a,144 ; ASCII code for User Defined Graphic 'A ... />
; UDG graphics.
[/CODE] -
Help needed... RND in machine codeI have been battling away trying to convert a simple BASIC routine (below) to machine code, but to no avail. The routine is used to fire 2 bullets a…
Skool Daze source code (and others)I suggest adding the source code for [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0004549"]Skool Daze[/URL] (available [URL="http://pyskool…
I suggest adding the source code for [URL="http://www.worldofspectrum ... br />
[QUOTE]The source code file contains a detailed list ... to Skool[/URL] (source code with list of bugs available ... Contact Sam Cruise[/URL] (source code with list of bugs available ...BIFROST* Advanced Programming - part 1In BIFROST*, it's much easier to just make changes in the tile map and let the engine automatically draw & animate everything in multicolor for you. …
... it here?
[CODE]/* ----------------------------------------------------------------
* BIFROST* ENGINE HI ... 20 LOAD "TILES"CODE
* 30 LOAD "BIFROST*"CODE
* 40 ... LOAD "bifrost_h1"CODE
* 50 ...BIFROST* Advanced Programming - part 2This second demo shows animated and moving tiles together, and also how to implement collision detection. This knowledge should be enough to implemen…
... the same way:
[CODE]/* ----------------------------------------------------------------
* BIFROST ... ++f) {
// frame sync
asm("halt");
... /> }
}
}[/CODE]
The compiled ...BIFROST* Advanced Programming - part 3This new demo demonstrates the BIFROST* built-in sprite support that I mentioned before. In BIFROST*, "sprite tiles" are 2 special tiles that BIFROS…
... the player:
[CODE]/* ----------------------------------------------------------------
* BIFROST ... }
// frame sync
asm("halt");
< ... f) {
// frame sync
asm("halt");
...BIFROST* Advanced Programming - part 4In previous posts I demonstrated how to move multicolor tiles up and down smoothly by a single pixel, and sideways by an entire char (8 pixels). Thi…
... implementation:
[CODE]/* ----------------------------------------------------------------
* BIFROST* ... f) {
// frame sync
asm("halt");
... /> }
}
}[/CODE]
The compiled ...Hep needed with a bit of code...I've written a bit of code to make a character move across the screen, but the counter stops at 29 when the 3 lines to delete the characters trail ar…
... 've written a bit of code to make a character move ...z80 Code Profiling (RESOLVED)Hi All, Just a quick question to ask if there is any way of profiling z80 Code for the Speccy??? I'm trying to write a piece of software and I curr…
... any way of profiling z80 Code for the Speccy???
code, which is a pain in ... to auto-profile the running code, I would be extremely grateful ...BIFROST* Advanced Programming - part 5In my [URL="http://www.worldofspectrum.org/forums/showthread.php?t=40437"]previous post[/URL] I demonstrated how to move multicolor images smoothly i…
... in different situations:
[CODE]/* ----------------------------------------------------------------
* BIFROST ... f) {
// frame sync
asm("halt");
... }
}
}[/CODE]
A compiled version of ...Machine code loopsThis might sound a bit daft, but I,ve forgotten how to do loops using th 'b' register... I want to loop this x mount of times: [CODE]ld a,r and 6 i…
... mount of times:
[CODE]ld a,r
and ... /> call 43100
call 45000[/CODE]
There is any ...BIFROST* Advanced Programming - part 6The purpose of this demo is somewhat different from previous ones. Instead of teaching a new technique, the main goal here is to demonstrate how much…
... br /> * 20 LOAD "tiles"CODE: LOAD "tilemap"CODE
* 30 LOAD " ... while(1) {
// frame sync
asm("halt");
// frame sync
asm("halt");
Revisiting Spectrum CPU clock regenerationWarning: This post will be a bit nerdy :-) Some time ago, I experimented with phase locked loop circuits as a possible way to regenerate the Spectru…
... wanted to keep in sync with the video clock, ... ]http://photo.alioth.net/DPLL/sync.png[/img]
sync.
Actually, ... 're back in perfect sync with the ULA only ... the most closely timed code changing the right hand ...Optimisations in Exomizer Z80 decrunch codeThis is the 163 bytes old code (simple and optimized): [CODE] ld iy, exo_mapbasebits ld a, 128 ld b, 52 push de exo…
... of 3 bytes. Changing this code:
[CODE]
call exo_getbits
code)
[CODE]
call exo_getbit
code:
[CODE]
ld iy, exo_mapbasebits ...Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …
... underlying colour alone:
[CODE]
;
; Output of Messages ... /> .msgfir defm " PRESS FIRE "
[/CODE]
On entering the ...Speedlock Source CodeOooh - found some interesting Amstrad/Spectrum Speedlock source code over at [url]http://web.archive.org/web/20070126232648/http://andercheran.aiind.…
... interesting Amstrad/Spectrum Speedlock source code over at [url]http://web ...Code execution logging/profilingAs revealed in [url="http://www.worldofspectrum.org/forums/showthread.php?t=41666"]this thread[/url], I'm adding support for reading code execution l…
... 'm adding support for reading code execution logs produced by emulators ... of working out what's code and what's not in ... can do some kind of code execution logging or profiling, for ...Biturbo 2 turbo loader now available for general useAfter tinkering with its code, extracted from a TZX of one of the infamous Italian S.I.P.E. "tape magazines" which published hacked games for the Spe…
After tinkering with its code, extracted from a TZX of ... the process of adapting the code to your needs by calculating ... ; Pilot length - 3190; Sync 1 pulse - 714; Sync 2 pulse - 714; Zero ...Relocating a block of code as to work on a 16k spectrumI've written a game in from 50000 to 65535 and was wondering if there were any way to relocate the entire block of code to work on a 16k Spectrum. I…
... relocate the entire block of code to work on a 16k ... will move a block of code and alter all the jumps ...Freescape based on reverse engineered "I of the Mask" code?That's what Sandy White has said in this interview just published on Eurogamer: [url]http://www.eurogamer.net/articles/2013-03-06-code-britannia-san…
... .net/articles/2013-03-06-code-britannia-sandy-white[/url]
code and based the Freescape engine ...Assembler v Machine CodeHi. I've been looking at a lot of the code examples in the Development section and can see that Assembler is the way to go. However, I was wondering …
... at a lot of the code examples in the Development ... actually codes in neat Machine Code?
I use ... total control over the actual code, and where various variables are ... to replace a lot of code if I need to ... an example sheet with some code on it, but I ...plus d machine code loader issueas many of you know i have done / been doing quite a few tr-dos recracks for the plus d but i have come into a bit of a problem the plus d machine co…
...
the plus d machine code loader requires you to have ... after is a bit of code to put before the loader ...Spectaculator loading out of sync.Just noticed my emulator is doing this: When you load off the pretend tape player the sound of the loading is out of sync with what loading bars you …
... the loading is out of sync with what loading bars you ...How to test Z80 Code?Hi All, Is there a way to test a block of z80 code (nothing speccy specific in it) with many different inputs? The reason I ask is that I'm writing…
... test a block of z80 code (nothing speccy specific in it ... and want to check my code's output for every combination ...PENTAGRAM and THE CODEHey, I have these two games up for grabs. Pentagram needs no introduction. Just note that the clam is missing 3 of those little thingies that hold …
... loads fine :)
The Code is a 1984 release, or ...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…
... get to grips with Machine Code - something I could never manage ...Are these files of any use to anyone? (MANIC MINER MUCH FASTER AND SMALLER CODE)I've not touched any of this for 3 years, I thought I lost it when I had to reformat my C: drive. EDIT: These links might work Z80 source [url]http:…
... did rip off the movement code from the JSW disassembly after ...CODE SCREEN$ in MCIs there any way of determining what character is displayed at a certain co-ordinate from machine code like the 'IF CODE SCREEN$=' arrangement in bas…
Is there any way of determining what character is displayed at a certain co-ordinate from machine code like the 'IF CODE SCREEN$=' arrangement in basic?Machine code assistance please #1Dear all, Learning the ropes here, so please excuse these odd questions which may seem simplistic to you learned lot. This routine is placed at 33…
... it gives me 32867.
[code]
ld l,155
ret
[/code]
When I add ... the beginning, the following...
[code]
ld hl,0
ld bc,0
[/code]
...it seems to work ...
