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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 ... -
Machine code optimisationI'm geting back into z80 coding and wonder what the best way of showing how efficient the code is. I've got Rodney Zaks book and see there are timin…
... of showing how efficient the code is.
I've ... to determine how fast the code runs? -
MOVE_M Object Movement Manager for BASICAs moving things around on the screen is usually the slowest part of a game written in BASIC, I've been pottering around with this routine to handle …
... to handle that function in machine code, so the BASIC programmer ... appended to the MOVE_M code.
[code]
10 ... FN p(23730)+1: LOAD "MOVE_M" CODE ORG:
LET DOTRAP ... /> 9999 RETURN
[/code]
[code]
; MOVE_M moving ... -
Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…
... than 255 cycles on Z80 machine code, since the 16-bit ... byte:
[CODE]; A simple program to fill ... /> LD B,E ; Load the lower byte into B ... /> LD C,D ; Load the higher byte into C ... ,loop
RET
[/CODE]
Maybe this ... -
Self modifying code ??I made a game in C that was mostly accessing arrays and using FOR NEXT loops, I ran out of memory, so I was thinking would it be possible to use sel…
... possible to use self-modifying code so that say 20 FOR ... NEXT loops use the same code?
or 20 array look ... ups can use the same code?
When using C ... always write out all the machine code necessary to do loops and ... -
Loading data from 128 memoryAfter all these years I have come across the LOAD! in 128 basic for storing/restoring data in the 128 memory. How do I go about implementing this in…
After all these years I have come across the LOAD! in 128 basic for storing/restoring data in the 128 memory.
How do I go about implementing this in machine code?
Thanks in advance... -
How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…
... ended, I started reading about machine code (in fact one of my ... seeing you all exchange assembly code and wondering how the & ... these guides on how to code, but I can't for ... an "easy" guide called Mastering Machine Code on your ZX Spectrum. Needless ... -
JHCon 2014Hello, not sure if this is the right category but JHCon 2014 will take place[B] from 28. to 30.11.[/B] at usual place - gymnasium in Jindrichuv Hrad…
... Intro Compo
--- your intro code must be 1024 bytes long ... loader to run it with LOAD "" command
--- send your ... BASIC program must be LOAD ""
--- usage of machine code (USR to RAM ... loader to run it with LOAD "" command
--- send your ... -
Duke's "Cosmic Alien"Don't know anything about this one. [B]COSMIC ALIEN[/B] (c)1984 By DUKE MICRO CONSULTANTS Written by John Robey UDG graphics of a single invader, …
... copy and is temperamental to load. I had to break into ... corrupted. The main data is machine code and it ran by a ... -
Confused about DOS SET MESSAGEI'm confused about this function and the ALERT routine. I was rewriting a machine code +3DOS loader and I was trying to use this routines to collect …
... routine. I was rewriting a machine code +3DOS loader and I was ... I test this on BASIC (LOAD, SAVE), it works fine. My ... 'm calling +3DOS from my code (DOS OPEN, DOS READ), +3DOS ... -
ZX-Assembler version 0.8 (beta) releasedDear readers, yesterday I've published ZX-Assembler in its first version 0.8. It offers you some interesting features, even if I know there are …
... around:
* Load and edit ASM files, following ... />
* File Dropbox: Load and save without using the ... SNA file containing your own code!
* Edit ... editing data
blocks containing machine code.
* Error ... -
z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... was such a thing as "machine code". 30 years later i've ... .
ld a,32 ; ASCII code for space.
rst 16 ... ld a,22 ; ASCII control code for AT.
rst 16 ... why does the first line load the accumulator with a?
Flood FillHi Folks, Can anyone point me to a flood fill that I can call from ZX BASIC? I have looked through the archive and although there are posts about…
... /> * Machine code
* Works from any memory address so I can load it ...Simple bit of machine code not working [SOLVED]ishHi all. It's late and I'm tired and I have no idea why the following piece of code wont display a little smiley face [code]ld hl,udg ld (236…
... why the following piece of code wont display a little smiley ... face
[code]ld hl,udg
ld ... ,126,126,66,60,24[/code]
I'm using ...Add with Carry ExampleHi, I have been really struggling to understand this simple example from Mastering Machine Code and I wonder if anyone can help? I have include…
... this simple example from Mastering Machine Code and I wonder if anyone ... is happening:
[code]LD DE,3385
LD ... ,L ;C = AE
RET[/code]
Therefore BC = ... confused because I thought with load HL etc, then the H ...New Game (2016 revival): A Yankee in Iraq (1992)Hello everyone, Way back in 1992, I wrote a shoot-em-up called [i]A Yankee in Iraq[/i]. The entire game was written in Sinclair BASIC. Recently, I…
... even figured out how to load a headerless BASIC file to ... tips on loading BASIC using machine code can be found here: [url ...Time Gate graphics patchI've rediscovered Time Gate and one thing I don't like about the game is that it's hard to remember what's what in the status indicators. The manual …
... with a Multiface & type LOAD "". This is how it looks ... . I'm no good at machine code but getting better at Boriel ...The Complete Machine Code Tutor - bug?Dear all, I'm having a fiddle with The Complete Machine Tutor and have come to the bit where they're adding registers together. The image on the l…
... a fiddle with The Complete Machine Tutor and have come to ...New ZEsarUX beta - RC2Hi I have uploaded a new ZEsarUX beta version on the usual url https://sourceforge.net/projects/zesarux/files/Beta_and_Snapshot_versions/ This…
...
Added setting to load source code in remote protocol to debug ... programs viewing the source code
Improved a bit QL ... from Pentagon to non Pentagon machine
Fixed bug mapping real ...Less MIA - Peker AssemblerMIA and also missing from the database! [img]http://oi66.tinypic.com/16hw67a.jpg[/img] Peker Assembler TZX https://app.box.com/s/vdniq5c6r30…
... that came with the Peker Machine Code Course, which unfortunately went into ... at address 59000. To load elsewhere use load "" code ADDRESS
To ... run the example:
Load the ...New ZEsarUX 5.0Hi! ZEsarUX 5.0 is out! :) You can download it from the URL: https://sourceforge.net/projects/zesarux/ Finally I have succeded emulating Si…
... on the GUI, like:
* load-source-code
* hexdump-internal
machine
Fixed bug mapping real ... /> Fixed bug when Jupiter Ace machine and border disabled
Updated ...The trouble with good code isLots of times I've come here to ask for help and always got it pretty promptly. Which is wonderful and one of the reasons why I don't think there's a…
... trying to learn hex and machine code until I have a thorough ...Using BASIC from Machine CodeHi Folks, Came across a very interesting article by Toni Baker in Your Spectrum: http://www.users.globalnet.co.uk/~jg27paw4/yr11/yr11_66.htm …
... 's assembler:
[code]
ORG 62000
[/code]
The above ... it via:
[code]100 CLEAR 61999
110 ... /> 120 LET A=USR 62000[/code]
The Spectrum crashes ...Where to start? I want to learn assembly for the Spectrum (Total Novice)Hi, I want to learn to code assembly for the Spectrum but I'm a bit lost. I'm a programmer so I'm fluent with computers and several languages (or…
... /> I want to learn to code assembly for the Spectrum but ... /01/12/tutorial-zx-spectrum-machine-code-game-30-minutes/
load assembly.
My question is:
How can I code ... assembly for the Spectrum and load it in an ...Headerless tape loading blocksIs there any way to convert headerless machine code blocks to regular headed blocks? I imagine it involves Taper. I ask because now that I know I'…
... any way to convert headerless machine code blocks to regular headed blocks ... supposed to but can't load from tape (yet), I thought ...Unexpected issue with +3DOS port of Pro BMX SimulatorI'm continuing to port my tape-based games to 3-inch disk (you may have noticed my previous post about PSSST!). Today I started on Pro BMX Simula…
... on Pro BMX Simulator from Code Masters. The 128k version includes ... wrote a machine-code disk loader to load in the program code and music ... the start of the music code was getting corrupted some how ... to load the music into RAM page 3 (updating the main code ...Restoring AY registersAfter doing (not still finished) the sna to tap converter, I'm going to try to do the same for 128k snapshots. I've got threee ideas about what to do…
... machine code routine that does the following steps.
2.- Load SCREEN ... $ (with the transfer code).
3.- Load RAM from ... would be hidden in machine code in step 1 and ... time passes between registers load and program execution (can ...Amiga chit chat (sorry but it never really was a commode designed machine)I wish there was a forum like this for the Amiga, perhaps there is but I tried a few and they mostly seem pretty moribund and lots of the links at Am…
... /> Since I'll never master machine code - maximum kudos to those of ...A couple of random questions......because, why not? (1) USR0 mode on the +3/+2A/B I know of its existence, I know how it's used, and I have some games that require it to work o…
... to using Loader, or typing LOAD "" in 128 BASIC? And ... I understand very much about machine code - the ZX81 (and, presumably ... , ZX80) usually stored machine code this way, but it would ... /> Theoretically, could a machine code program on the ZX81 be ...
