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L Break Into Program, 0:1 BlogThis is very much a work-in-progress but it's got a load of Z80 code I'm in the progress of writing, including some fast vector graphics primitives (…
... a load of Z80 code I'm in the ... the code is based upon original notes I'd kept from ... . Sadly most of the original code has been lost.
... a BASIC and machine code primer.
All code is free ... optimise for speed. The code on the whole is probably ... -
New Game: Catacombs of BalachorCurrently in the process of uploading onto WoS... Watch this space..! [IMG]http://i1016.photobucket.com/albums/af288/Thirdharmoniser/catacombs.jpg[/…
... of learning a bit of machine code/assembly, with the intention of ... a Spectrum game for the machine's 30th anniversary... So it ... thanks to an old pal from "back in the day" who ... learning to program our beloved machine..
[SIZE="1"](P ... -
Best books & Sugested reading..Hi i was trying to search the forum but couldnt find it. Looking at WOS there is a number of books on BASIC, programming, machine code ect.. I mess…
... to learning lol.
From what i can remember it ... can remember many happy hours from my youth spent like this ... sudenly when i was recovering from illness I realised it would ... am reading Introduction to Spectrum machine code now.
But what ... -
Z80 snapshot formatI read documentation for Z80 snapshot on WOS and see in table possibility insert ROM image to Z80 file. Here is full table: [code]The pages are numb…
... is full table:
[code]The pages are numbered, depending ... -[/code]
Exist any emulator supported rom loading from Z80 ... accept only ram pages from Z80 snapshot and ignore ... Only UNREALSPECCY emulator support loading this snapshots with rom pages ... -
ZXDev - powerful environment for development in four languages is ready for testingXDev/ZXDev is open and free set of compilers, additional tools, libraries and design patterns for target platform ZX Spectrum 48K in different progra…
... compilation. The decomposition of code into different modules enables ... -oriented to be independent from a launch environment, so ... small size of the target machine code, better than z88dk:
... .PRSTR("Hello World") END TinyHello.[/CODE]
After ... -
saving time populating large arraysI use a variation on this idea for storing machine code at the end of programs without interfering with LIST, then it occurred to me that it would al…
... this idea for storing machine code at the end of ... and also for protecting variables from CLEAR.
... it will be preserved from RUN and CLEAR and ... saves a continuous block from the start of PROG ...
REM byte1 = 11000000 + CODE "d" - 96 = 196
A Miscellany of Dangerous TipsHere's a selection of ideas for using some of the more obscure system variables which I've found handy on occasion. They can be very convenient if us…
... sinclair/books/MasteringMachineCodeOnYourZXSpectrum.pdf]Mastering Machine Code on Your ZX Spectrum[/ ... the executable machine code is always ready to run from the addressed ... possible from BASIC alone.
References:
* storing machine code in ...eBay sales - less common games (e.g. Dalek Attack)I have some Spectrum games and hardware for sale on eBay, including the following: [LIST] [*]Dalek Attack [B](sold)[/B] [*]The Jetsons [B](sold)[/B]…
... states of disrepair
[*]Mastering Machine Code On Your ZX Spectrum ([I ... on building your own ZX81 from scratch
[*]Loads of boxed ...New Game: Advanced Premiership SimulatorHi Friends, I discovered BASin last Saturday, and I've found it rather fun to play with. I ended up producing this; It's basically (no pun intended)…
... using digital samples (achieved using machine code). There is also some extra ... of BASIC and 25k of machine code and data. There's also ... /> Hope you get some amusement from it, it was really fun ... in C/Java and hobbyist machine coding have certainly changed the ...A quick newbish questionI'm reading through 'mastering machine code on your spectrum',as kindly posted by Mr bert on this forum. Correct me if I'm wrong from what i read,bu…
I'm reading through 'mastering machine code on your spectrum',as kindly ... me if I'm wrong from what i read,but single ...720K Amstrad PCW8512 drive B: as drive A: on a Spectrum +3 ?Hi Spec-chums. I happen to have a 720K drive from an Amstrad PCW8512 which i got off ebay, and i was wondering if it is possible to use it as drive …
... to have a 720K drive from an Amstrad PCW8512 which i ... diskettes to 720K from BASIC, but need to run a machine code program.Shifting the UDG pointer from a MC loop...I have got myself in a bit of a mess again, I am trying to write a machine code subroutine that shifts the udg pointer (23675) up 64 places then shif…
... am trying to write a machine code subroutine that shifts the udg ...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 ...Movin And A Groovin Horizontal Flip improvementOn the left is the flip horizontal portion from Andy Pennell'S excellent Movin' & a Groovin' machine code screen routines from Your Spectrum #19 (Oct…
... & a Groovin' machine code screen routines from Your Spectrum #19 (Oct ... utterly confusing and wonderful reverser code.
On ...
[code]
FLIPHO LD HL ...
[/code]
Now.. Dr Beep ...How do I enable Currah speech in ZX SpinHow do I get the speech to activate? Do I need to download the ROM from somewhere? Also how do you program it in machine code?
How do I get the speech to activate?
Do I need to download the ROM from somewhere?
Also how do you program it in machine code?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?Returning to BASIC from asmI never had to do it till now but there is always the first time :) At machine code program start I preserved SP register and all the other ones. A…
... first time :)
At machine code program start I preserved SP ...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 …
... handle that function in machine code, so the BASIC programmer ... The routine gets its instructions from three data tables:
from BASIC
; object properties ... GOSUB
; key = key code from KEY_SCAN key codes table (copied ...Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…
... 2040-bit numbers is far from fast). Printing the largest 2040 ... a binary number into BCD, from which it's very easy ... it a try as Z80 machine code implementation, to see if it ... br />
The listing:
[code] org 40000
Principal ...yx git repositoryHi, working version of yx - the preemptive multitasking operating system for zx spectrum - git repository can be found [URL="https://github.com/tsti…
... borrowed" a lot of tricks from the community - it is all ...
Most of the code is compilable under ubuntu. Some ... refactoring of the OS code to make it even ... ),
- implement process loading and killing code (relocation technology is available ...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 ...A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…
... games in +3DOS.
[CODE]dos_open equ 262
dos_close ... 9497
db 0 ; main code (across RAM 5, 2, 0 ... /> db $ff ; end of list[/CODE]
In this example ... only way of loading data using +3DOS files? Loading from tape needs only ...Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…
... remembered my Speccy, and how machine code had always beaten me. Now ... ?
[*]Would this be my loading problem?
[*]If not - what ...Animated attribute revealA new challenge to solve next. I would like to create an animated attribute reveal in machine code by having my 768 byte attributes held in ram whic…
... an animated attribute reveal in machine code by having my 768 byte ... now ready to add the code to reveal the attributes in ... animation of attribute squares moving from top left to bottom right ... />
Are there any such code examples around?New Game: YAHTZXHi all, Well, it?s taken me more than 3 years, but I think I?ve finally got there. Here is YAHTZX, a 100% assembler version of Yahtzee (? Milton Bra…
... assembler listing can be downloaded from here:
[ ... various code samples from around the web (including stuff from WOS of ... B]
40 Best Machine Code Routines for the ZX Spectrum ... The Alarm
(? 1985 - from the album ?Strength?)
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 ...Address bus contents (i.e. PC) during execution of HALTI'm wondering if anyone can tell me what's placed on the address bus during execution of HALT, beyond the initial M1 cycle. The Z80 user manual state…
... contains the following code for HALT:
[CODE] case 0x76: ... PC--;
break;
[/CODE]
For NMI ... , it contains:
[CODE] if( z80.halted ) { PC++; ... aren't lost when loading from a snapshot saved during ...Python script to scrape Amazon.com book reviewsI've been meaning to read the Gollancz Fantasy Masterworks (roughly 40 books) and Sci-Fi Masterworks (roughly 100+ books) lists for a while now, but …
... ratings for each book from amazon.
[CODE]
# Scrape ... rating is prefixed by the code:
#
sentinel_string = ''
... (168)
The Time Machine H.G.Wells (161)
The Time Machine and The War of the ...Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…
... which plays beeps using a machine code routine which steps through $4000 ... at those locations.
From the design of the kludge ... it seems that TS# coming from the SCLD goes low at ... EXROM chip in the standard machine is only 8K long and ...New Game: Ninjajar!Yes, it's here! We had some late hour problems with +2A models and had to switch to a machine code loader (as the game takes up the whole 128K, even …
... had to switch to a machine code loader (as the game takes ... game and/or the source code from the bottom of the game ...
