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Unpublished spectrum gameHi there I have a Spectrum PDS development environment and before I get rid of my old PC which has an ISA slot I thought I should ask this question i…
... Stack Pointer can be and disable the interrupts (DI) and choose ... just strip off first 3 bytes and the last byte to ... -
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... and "struct sp1_cs"s (24 bytes). This program is using BALLOC ... and another way is to disable interrupts entirely. I've done ... will leave 0xc000-0x8000 = 16384 bytes available to our program (z88dk ... byte blocks will occupy 210 bytes total carved out of ... -
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... />
As usual, interrupts are disable with the help of some ... occupies 4*8*2 = 64 bytes. The sprite graphics at the ... -
Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…
... state. BEEP for example will disable interrupts on entry and enable ... runs. The currah requires 6 bytes or so of memory reserved ... -
Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…
... state. BEEP for example will disable interrupts on entry and enable ... runs. The currah requires 6 bytes or so of memory reserved ... -
Any BBC aware Specchums out there?After the UK101 and VIC20 emulators I've moved my sights onto emulating a BBC computer. This emulator will be different though in that it will be a Z…
... . Envelopes for example require 14 bytes. It [I]should[/I] be ... to VDU 6/21 (enable/disable VDU). My next tasks will ... -
Any BBC aware Specchums out there?After the UK101 and VIC20 emulators I've moved my sights onto emulating a BBC computer. This emulator will be different though in that it will be a Z…
... can be up to 9 bytes long. The printer routine however ... byte out. Even if you disable the screen device with VDU ... -
ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …
... /> ;
org 32768
DI ; Disable interrupts.
; These next two ... /> INC IX ; Move IX 3 bytes along.
INC IX
Usr 0 ?I'm not sure I've ever seen this explained before, but why do some programs (only demos, as far as I can see, so far) need USR 0 mode when run on a 1…
... "SPECTRUM", but this command will disable 128kB memory and will available ... the Spectrum uses some more bytes in Bank 7 afaik, for ...Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …
... -PatternTable)/2
DI ;Disable Interrupts
LD SP ... to an even number of bytes, regardless
; of the exact ...Machine code and Basic system variablesSpectrum system variables (I mean 48KB model) are essential for Basic. But what if I started my machine code program and it's never going to return t…
... code program, but, you must disable interrupts or write your own ... /> And what about this 256 bytes used for printer buffer? Is ...MultichromeIt turns out that multichrome, and other screen modes, are emulated in Fuse and Eightyone via ZX Spectrum SE emulation (which is similar to the TC214…
... :
from 16384 = 6144 pixel bytes
from 24576 = 6144 attr ... :
from 39152 = 6144 pixel bytes
from 57344 = 6144 attr ... br /> ATR2.BIN = 6144 attribute bytes for load from 57344 (in ... memory in DOCK ????
You disable high 16kB of main memory ...Interrupts - been a while !Not sure if this is the right place for this (1st post on WOS, but been a speccy user since Dec'84 :-o (yes I am that old ! :p) ), But I can't for …
... : equ 0xfdfd ; jp interrupts 3 bytes at this addrs
;****************************************
; disable ints before calling
; hl ...Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …
... stack just few tens of bytes above screen.
another ... sloppy programming to me - why disable keyboard input on the title ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... again, it moves down 2 bytes and stores that.
When ... stack pointer, that you either disable interrupts (DI) or you're ...Maze Mania - How did they do it?Hi, I was looking at the game "Maze Mania" by Hewson Consultants, written in 1989. The game can be downloaded from here [URL]http://www.worldofspec…
... IM2 or something
DI ; Disable Interrupts
LD (spstore),SP ... ; 144 (18 Rows of 8 bytes)
line_loop:
POP DE ... />
Where the first 2 bytes are the screen destination, the ...Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
...
org 08000h
di ; disable interrupts
ld hl,gfx ... 8 times
; Get 4 bytes from GFX
pop de ...free antivirusDoes Windows XP have a good antivirus software that's free? Can I have a recommandation for one? I am dabbling with XP on one of my computers see...
... good but you need to disable the linkscanner as it's ... search and destroy and malware bytes antimalware are also good
Preliminary MontyHey All... A new 2009 production (port from Atari) of a game called "Preliminary Monty" is out. It is a VERY nice platform game - with a bit "crude…
... tested as inactive, you must disable joystick in game !
disable joystick port reading
(add 11 bytes code)Preliminary MontyHey All... A new 2009 production (port from Atari) of a game called "Preliminary Monty" is out. It is a VERY nice platform game - with a bit "crude…
... tested as inactive, you must disable joystick in game !
disable joystick port reading
(add 11 bytes code)[/QUOTE]
ZIP ... : IF USR xxxx THEN POKE (disable joy)Question on copying screen bufferHi, Al my prevoius games were copying graphics directly to screen memory starting at 16384. Now I'm experimenting with screen buffer where I could d…
... />
2) Use IM2 (257 bytes of interrupt vector table to ... more than 128 cells (256 bytes = 128 * 2 byte data) I ... levels/changing screens, etc.). I disable the interrupts whilst filling the ...converting ZX128 software for SAM COUPESAM COUPE is computer compatible with ZX48 model. Use same ports, same keyboard with compatible membrane, 64kB adress space with possibility connect …
... 48rom with short (about 100 bytes) routine for install all 128kB ... file must be find and disable all access to AY ports ... all instructions LD BC,#7FFD (bytes 01 FD 7F). In emulator ...KING OF PONG: Pong revisitedHello everybody. I'm proud to announce you that my last personal project for the ZX Spectrum, "KING OF PONG" is available to download here at WOS si…
... are prone to wasting many bytes. Just by opening the ... br />
How many bytes can you save? It's ... could still save hundreds of bytes ;)
Hope ... and it doesn't disable the key mode anyway ... . Maybe you can save some bytes here too ;)
...Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…
... link occupies the last 256 BYTES of the Z80 memory map ... *
; *MUST DISABLE INTERRUPTS*
; Read bytes from AUX port ...Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…
... +3 disc. The last 512 BYTES of the Z80 memory map ... from 16384 to 65023. 80 BYTES of memory are left to ... *
; *MUST DISABLE INTERRUPTS*
; Write bytes to AUX port ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... is; 64 BITS * 4 = 32 BYTES (256 BIT) memory fetch so ... line size can be 64 BYTES depending on the model.
BYTES (According to wikipedia.org - I ... model!!! The Spectrum is easy - disable those interrupts, avoid contended RAM ...New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... link occupies the last 512 BYTES of the Z80 memory map ... ),a
ld b,07Fh ; Disable paging
ld a,00100000b ...New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... within a couple of BYTES of itself but as ... /> Changed threshold from 43 BYTES to 46 BYTES.
Fixed ... new command /d to disable memory paging for compatibility issues ... Display regions.
/d - Disable 128K memory paging.
/f ...New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... equiv. -Wfoo)
-w-foo disable warning foo (equiv. -Wno-foo ... without - just gets size in bytes of filename)
LOAD_FILE: ... (loads x BYTES of file)
SAVE_FILE: ( ... saves x BYTES of to a file)
