-
How to return to basic properly from ASMI am messing around with a fast stack copying routine. But I am getting "A: Invalid argument" error when I later return to basic. I know you h…
... basic.
I know you have to restore the IY register ... before returning to basic but my code ... as IY when returning to basic. I think one of the ... -
How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…
... (also known as the Accumulator) register.
HL is ... .
If u r using an assembler, the assembler ... u a sample:
BASIC:
LET A = 2
register. the assembler
; automatically ... -
How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…
... (also known as the Accumulator) register.
HL is ... .
If u r using an assembler, the assembler ... u a sample:
BASIC:
LET A = 2
register. the assembler
; automatically ... -
+D/Disciple games archive?Hi all, Having finally got my disciple to work, I'm starting to have a look at hacking multiload games. Is there any archive on the web with games t…
... data block named "r-typeA.dat". The "r-type" part of ... datablock number in the a register and ".dat" is appended ... modified game snapshot in "r-type.z80" and the ... of the start of R-type. You will replace ... which was loaded by the Basic loader program. You can ... -
Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…
... the lottery number-picker ZX BASIC program, caused by running it ... order FRAMES byte, and the r register. The resultant 16 bit value ... ,a
ld a,r ; the refresh register is used for the ... the result in the bc register pair
That seems ... -
Pseudo random numbersHi everybody, I 'd like to convert a little program i wrote in VisualBasic6.0 to C or C++ to make it run faster and for training as i'm a very very n…
... /> As an aside, the ZX BASIC function "RANDOMIZE" is used to ... on some value of the R register (tho' preferably not if it ... -
Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... case the basic program gets whatever was in the BC register pair ... :
[code]
let r = USR 32768: REM move 3 ... ,100,20
let r = USR 32768, "move 3,100 ... ,20"
let r = USR 32768, "move", a, 100 ... -
z88dk - Plus 3 dos librariesdo they work? I looked in the cvs to try to piece together an idea of the syntax of the commands (the documentation is pretty sparse :-() and it loo…
... />
if (in = fopen("test", "r"))
{
fread(buf, 1 ... be preserved, as in Sinclair Basic which doesn't allow you ... " routine which will restore expected register values before jumping into dos. -
MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…
... the interrupted bank (probably a BASIC ROM of some description). Also ... is to properly adjust the R register so that it contains the ... -
Other forums and why they piss me offI was on this site where you can download comics and ended up in the comicbook forum (my blame there) and all of a sudden just because I was giving m…
... saw nothing to contradict my basic assertions.
[quote]
r", "w*g", "c**n" (ALf ... forum because I had to register to get my grubby mits ... -
Goldfinch - an open software stack for mass storageYep, another pet project of mine to compete with all the others I've started. But hey, if I didn't get distracted by things like this I'd just get di…
... = fopen("d>1:hexdump","r");
/* Read block ... = fopen("d>1:hexdump","r");
while (fscanf( ... finite set of messages (a register containing message id which should ... groups. The first group is basic i/o, another group direcory ... -
The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... 16kB (GASWARE set SP register also in high memory area ... this area used for 128 basic compatibility.
- cursor ... BREAK - cancel/exit window
R + NMI - software reset
RESET ... (in browser)
SS + R - software reset (without OUT 7FFD ... -
The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... away from the idea of Basic being the "default" operating ... interrupt mode, save the I register then point it at my ... code for capturing interrupt and register state[/url], "borrowed" from ... some effort to capture the R register, despite apparently not using it ... -
Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…
... the value of the IX register is is what the spectrum ... . Out of Data ,R.Ramtop No Good or C. Nonsense in Basic. -
designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
... one (increment). To clear a register you subtract or XOR it ... mastered and gained knowledge of basic computer design, you can start ... be loaded into the A register in four instructions taking just ... missed out the 'LD A,R' instruction. Then came the memory ... -
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... to use structures using index register IX as I feel strongly ... !
ret ; Back to BASIC!
; --------------------------------------------------------------------------
; 251 T R E W Q
; 247 ... -
emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... ?
so far the bbc basic for the speccy doesnt support ... atom lite disc conenctor?
r-type smooth scorlling ? pixel sprites ... /> does emnulator allow pasting of basic laugnage trapping nmi from mouse ... the code with a full register dump on the PC side ... -
emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... format I require such as BASIC program DATA statements... the possibilities ... until I prove them. The 'R' register is another area that can ... s contents so my PC register dump could return the correct ... fixed value to take the 'R' register back to the point just ... -
RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... />
Sometimes (Zilog) The I register keeps its value as well ... is decremented by two and R gives a value between 13h ... the last value of DE register, that is, 4444h.
BASIC ROM. This is a normal ... -
Fuse: what do you want to see?An open brainstorm. If you had a team of programmers working on [url=http://fuse-emulator.sf.net/]Fuse[/url], what would you tell them to work on? …
... /> This would only work for BASIC games, surely? If any games ... imagine they would use the R register, which is changing so quickly ... -
Fuse: what do you want to see?An open brainstorm. If you had a team of programmers working on [url=http://fuse-emulator.sf.net/]Fuse[/url], what would you tell them to work on? …
... /> This would only work for BASIC games, surely? If any games ... imagine they would use the R register, which is changing so quickly ... that can come from FRAMES, R, or a combination.
R are not sources of randomness ... -
Fuse: what do you want to see?An open brainstorm. If you had a team of programmers working on [url=http://fuse-emulator.sf.net/]Fuse[/url], what would you tell them to work on? …
... /> This would only work for BASIC games, surely? If any games ... imagine they would use the R register, which is changing so quickly ... (machine code), and Mined Out (BASIC) both use this method, I ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... ran some short procedure in Basic) I think it's safe ... initial value of IFF
R=buffer[20];
F=buffer ... -
Kobrahsoft DB1 - doesn't work?Hi, I've tried loading [URL="http://www.worldofspectrum.org/infoseek.cgi?regexp=^DB1$&pub=^Kobrahsoft$&loadpics=3"]DB1 by Kobrahsoft[/URL] into two …
... 128 byte header plus three BASIC lines: two REMs holding machine ... to the use of the R-register which I didn't know ... .
Will the I-register always be set to $3F ... ? - because that's what the R-register is getting set to at ... -
Auto generated spritesLooking around for some graphics I came across [url]http://blog.disktree.net/?p=19[/url] , one of several such pages. Need the odd 8x8 UDG or two (…
... takes the contents of the r register, halves it & mirrors it ... key pressed
ld a,r ;r register always ticking round
and ... 8252
ret ;back to BASIC!
;
string defb 22 ... -
A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... basically:
POKE 65283 + r * 9 + c
In this ... some way) and check for register modifications, and preservations. Etc.
BASIC itself (not yet done). This ... -
Bug fixing woesGaahhhh! I've spent an afternoon off work agonizing over why my routine didn't work. It's something I'd already restarted so didn't want to wipe th…
[QUOTE=R-Tape;565651]Not so much ... , another flabby routine using every register available. I then discovered a ... /just/ useful for boriel's basic, since the assembly routines could ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... USR0 mode or to 48 basic, then return from NMI ... if I use 128 basic then after retun from NMI ... /> POP AF
LD R, A
JP PE, ... this routine refresh all register and original stack and ... write USR 0 in 128 basic. This info is valid ...
