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How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…
... 'm looking for a machine code routine which will
PRINT AT coordinates of where to ... ).
However, this machine code routine, when I tested
PRINT AT F,0;"" : ... routine which clears a specific number of lines
(which ... -
help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…
I have started to code my first machine code program, a simple roadrace ... /> printroad
ld (hl),a ;print left side on line1
print
ld (de),a ;??print a blank byte ... print top line road left
pop bc ;recover count for number ... -
Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... program to run the machine code and print the score we have ... bytes to give it a number from 0 to 65355.< ... the b register with the number of times we want ... load bc with the port number and use the instruction ... compare) to see if the number has dropped to show a ... -
storing machine code in BASICApart from putting m/c above RAMTOP, which means that it has to be POKEd or LOADed separately after the BASIC program; or putting it in a REM, which …
... when it encounters a line number >= $40nn there' ... /> LOAD "filename" CODE mcpos,machine_code_length:
PRINT "machine code starts at ";mcpos:< ... br /> STOP
9999 REM *** MACHINE CODE STARTS ... -
storing machine code in BASICA couple of years ago I posted a routine for storing machine code between PROG & VARS, based on an idea in Toni Baker's "Mastering Machine Code". Thi…
... posted a routine for storing machine code between PROG & VARS, ... when it encounters a line number >= $40nn there's no ... /256):
REM INSTALL MACHINE CODE... with GO TO 9161
CODE mc,ml:
PRINT "m/c starts: ";mc ... -
machine code basicsWondered if anyone can help me out. I have been playing round with some disassemblers (Zeus). And Machine code loaders. All I want to do is print my…
... Machine code loaders.
All I want to do is print my ... -
Machine CodeOk i had a spectrum when i was younger and only used it for playin games and typing simple BASIC programs - i mean really simple! Things like 10 Pri…
... simple! Things like
10 Print "hi"
20 Goto 10 ... want to do something in machine code. I've seen a lot ... the loaders and seein the code was all blocked out or ... any info, especially about the Machine code
Alex -
Fast division in machine codeHi Does anyone know what is the fastest way to divide a 16 bit number by 24 in machine code. Derek [ This Message was edited by: dmsmith on 2004-0…
Hi
Does anyone know what is the fastest way to divide a 16 bit number by 24 in machine code.
Derek
[ This Message was edited by: dmsmith on 2004-09-24 20:04 ] -
New Discussion Group? Sinclair Machine Code/AssemblyHello, What do people think about whether we should have a new discussion group relating to machine code for Z80? We have a Sinclair Basic discussi…
... new discussion group relating to machine code for Z80? We have a ... but not one about assembly code/machine code for the spectrum.
There are a number of postings in the forums ... so simply and fast in machine code.
For me, ... -
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…
I never got into machine code much back when I ... .
The only machine code I'd previously done in ... to the basics of Z80 machine code.
I ... don't laugh at the code, I'm a Z80 ... Z80 machine code, seems like loads of registers and a vast number ... -
Machine Code Microdrive File LoaderI've been experimenting with transferring games to run from microdrive. Typically I like to see a loading screen while things are happening, and I li…
... a link
[CODE];
; machine code microdrive file loader
; ... equ $5cd6 ; 2 byte drive number 1 - 8.
s_str1 ... equ $5cd8 ; stream number 1 - 15. also 0
number
copies equ $5cef ; number of copies made ... -
Automatic opcode to machine codeHi everyone, Would people use a program that you enter opcodes and it automatically converts them to machine code and saves them to a file. So if yo…
... it automatically converts them to machine code and saves them to a ...
and it would print out:
--------------
3E01 ... was thinking of making a machine code program to help me make ... -
Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... faster in machine code.. all the cool kids use machine code.."
... returned, you type in PRINT USR 61440 (or whereever ... [/code]
fingers crossed and a
[code]
PRINT USR ... 61440
[/code]
Ohhhh ... -
Machine code/Assembly language back in the dayHello. Back in the 80s when I was a kid, I didn't learn Z-80 machine code, but I was always curious about it. Just recently I decided to explore Z-…
... my little attempt at learning machine code on the Spectrum made me ... ! :-o
Knowing the number of times I managed to ... guessing if I was learning machine code on a real spectrum back ... for people who were learning machine code back in the 80s?
LOAD "" CODE in machine code/store 128 bank dataHow do you LOAD "" CODE from machine code? I have written the following MC routine that fits into a REM statement in a basic program. I want to cal…
How do you LOAD "" CODE from machine code?
I have ... the ROM's LOAD "" CODE routine, nothing fancy headerless ... code
ld a,244
ld (23739),a ;restore print ...
call 61900 ;start game[/CODE]Machine Code for Beginners - error?Dear all, I've picked rather old book called Machine Code for Beginners by Usborne.1983 There's an example inside which claims to print a messa…
... picked rather old book called Machine Code for Beginners by Usborne.1983 ... example inside which claims to print a message on the screen ... even without knowing too much machine code, a quick glance over the ... code suggests it would do nothing ...Calling machine codeOccasionally I see on ZX computers (mostly the spectrum, but I think also the '80 and '81), how someone made their machine code and wrote the bytes i…
... ), how someone made their machine code and wrote the bytes into ... like this:
[code]PRINT USR 60000[/code]
If the routine ... also do
[code]USR 60000[/code]
if you are ... see
[code]RANDOMISE USR 60000[/code]
Can someone ...Help! I'm learning Machine Code...Having decided to take the plunge and learn to machine code a while ago, I have started in earnest using the much recommended 'Mastering Machine Code…
... the plunge and learn to machine code a while ago, I ... using the much recommended 'Mastering Machine Code on your ZX Spectrum' by ... program which will PUSH every number between one and fifty (decimal ... is probably the first ever machine code program I have ever ...how to load machine codeFollowing the links given in various replies to my last discussion resulted in my downloading Mastering machine code on your zxspectrum and typing in…
... resulted in my downloading Mastering machine code on your zxspectrum and typing ... the clear was the wrong number. I didn't make any ...Can I record binaries from any emulator with Basic commands, machine code, macros or something?Hello I do not know if this is the right place to put this question Normally with ZXSpin if I want to save a binary file, I'm going to: file ->…
... data of memory address and number of bytes and he records ... this with some emulator and machine +2, +3, or another, etc ... commands in basic or from machine code, that is not in a ...Machine code loaderI was wondering how people wrote games. On the trail to this knowledge I discovered a machine code loader in basic, and also z80 assemblers. Which i…
... this knowledge I discovered a machine code loader in basic, and also ...Saving machine code on EmulatorI have been dabbling with Chapter 26 of Stephen Vicker's "ZX Spectrum Manual". [url="http://www.madhippy.com/8-bit/sinclair/zxspecman/zxmanchap26.htm…
... /> It explains how to input machine code and then finally tells you ... program that then loads the code to run. However, I cannot ...Speccy machine code info where is it?Recently I've been trying to learn Z80 and I've managed to make limited progress (some of my routines even compile now!) but I seem to be having trou…
... /> The dark art of speccy machine code is obscure and mysterious, thats ...Z80 Machine CodeHello again chaps, Hope I'm in the right category for this question - I suppose it could be under 'Game Creation / Programming'. hehe Ive got far t…
... a childhood ambition, and learn machine code.
I got familiar ...40 Best Machine Code Routines - ZX SpectrumHi, Currently for sale on EBAY: 40 Best Machine Code Routines for ZX Spectrum [url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=6917…
Machine CodeCan anyone point me to an online tutorial on ZX Spectrum Machine Code, please?
Can anyone point me to an online tutorial on ZX Spectrum Machine Code, please?Wanted: Machine Code Sprites and Graphics BookWould anyone be willing to either sell or swap this book. Its full title is Machine Code Sprites and Graphics for the ZX Spectrum : A complete guide…
... full title is
Machine Code Sprites and Graphics for the ...any tips for learning spectrum machine code?hello there, I have some experince programming in basic, both sinclair 48+ (just need to recall most of what i learnt :D ) and Quickbasic. anyway i a…
... am intrested in learning spectrum machine code, can you give me any ...Machine Code: quicksort optimisationI came across this z80 quicksort implementation when going through the wikipedia article on the same. It's 44 bytes long. I was wondering if any of …
... wondering if any of the machine code punters here would like to ... go at wittling down the code or optimising it for speed ...Machine Code QuestionHi All Not sure if this is the right place for this but it seems closest. Am starting to read the Toni Baker Intro to Machine Code book and its ver…
... the Toni Baker Intro to Machine Code book and its very interesting ... BASIC is, and the hex machine code discussed in the book plus ...
