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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…
... (apart from the Speccy ROM) like there are for ... br /> 3. Each character line contains 8 scan lines (8 ... vertical pixels per character line)
4. Horizontally there ... ,2)
SSS = scan line (0-7)
LLL = ... Eg: when plotting a line, you want to move ... -
AssemblersOk, two quick questions for you guys: 1) Can anyone give me a link to the Prometheus Assembler ? 2) Does anyone know of an assembler that satisfies …
... in easy when coding new ROM)
Further : controls as ... /> SShift+Y = Insert line
SShift+U = Del. line
SShift +3 ...
; do not delete this line it is used to go ... -
ArtistryIn my younger days (and to a certain extent, now) I was always intrigued about how the loading screens were constructed. Back then I'd assumed it was…
... the routine at #22B1 in ROM to calculate the adress. Didn ... idea.
If a line can be filled between 2 ... /beneath it cannot then that line can be filled between Startline1 ... endline1.
so a line at Y-pos=100 fills ... -
TAP or TZXI have several emulators, but none seem to work with TAP files. The games I really want don't have TZX files anywhere onkline. How can I play the TAP…
... just stores a tape, usually ROM Loader blocks (ID.10 for ... hand helds... useful for on-line gaming etc.
Cheers ... -
Datel Snapshot II - Tape?Just noticed someone selling a Datel Snapshot II thingy, but there seems to be a tape with it, which the seller indicates must be loaded before using…
... TZX file so that the "LINE" command can be removed from ... the "Program:" line?
That way I ... 1 byte patch to the ROM :)
[url="http:// ... .ntlworld.com/mark.woodmass/NoAutostart48.rom"]http://homepage.ntlworld.com/mark ... -
ZX81 and ZX80 emulator on Spectrum 128KA couple of weeks ago we were talking about a new ZX81 emulator for the 128K. Someone beat me. More details at [url="http://www.fruitcake.plus.com/S…
... could actually look at the ROM code :)
The TS2068 ... basically reused all the Spectrum ROM code, and, of course, Spectrum ... detect waves crossing the zero line in either direction which is ... -
BASin's BASIC Editor! Suggestions?Hi all! I'm just starting BASin's BASIC editor now - and it's finalised as a resizeable window that uses the spectrum font. Kind of like Notepad mee…
... supplement and (optionally) replace the ROM editor.
It's ... be "injected" back to the ROM's memory space. This may ... 's one BASIC statement per line - typing a ":" outside of quotes ... may include labels rather than line numbers too.
Any ... -
Text compressionI'm sure I remember seeing a short machine code routine published in a (very random) multi-machine listings magazine way back in the mists of time, w…
... Mighty Dopethrone fitted onto one line - giving the same effect as ... .
Just use the ROM charset but have a lookup ... -
ZX81 ScrollingI'm tempted to have a go at a bit of ZX81 programming, using MCODER II, though I could really use a fast multi-directional scrolling routine. Does a…
... left is simply shift every line 1 pos and space the ... the normal SCROLL-routine in ROM
and down is as ... -
Question about loading gamesHi! This may be a silly question: I use Spectaculator 52, and tried to load 48k games in 128k mode (they were games released before the 128k Speccy …
... changes to the Spectrum's ROM (Read Only Memory) this had ... Spectrum +3 (last in the line) is most incompatible of them ... -
How rare is R@RE?Yes, I've been wondering this 'rare' thing. How rare, in fact, are the old Spectrum-items? I mean it seems that some Ultimate games fetch hefty piles…
... etc...
Likewise the ROM`s, i never knew the ... the moment.
Bottom line, wot i have picked up ... -
TZX format updateHi folks. Following the private communication with Andy I would like to start a discussion on changing the TZX format to reflect new needs and improv…
... :
Perhaps add a CPC ROM block as we've done ... /> Andy's suggestion: A CPC ROM block would be useful, but ... block. But, a special CPC ROM block may be useful in ... , and these are available on-line at the ADATE archive.
EmuZWin problem!Hello! I'm trying to load Fairlight I into EmuZWin v2.4.004. It don't load at all. I'v tryed several versions of fairlight I and II. Thees files …
... |Custom ROM or starting with a parameter /ROM=... in a command line or ... if you want you can just rename supported ROM ... 16/32K to Spectrum.rom and put it ...EmuZWin problem!Hello! I'm trying to load Fairlight I into EmuZWin v2.4.004. It don't load at all. I'v tryed several versions of fairlight I and II. Thees files …
... |Custom ROM or starting with a parameter /ROM=... in a command line or ... if you want you can just rename supported ROM ... 16/32K to Spectrum.rom and put it ...new programmer needs information hi , i have been learning c++ for a while and am trying to make games using windows but being 28 and nostalgic , i thought it would be fun try and f…
... the screen
call 3435 ;Rom call to CLS the screen ... to recap on TASM command line...
TASM -80 -g3 ...Getting a DISCiPLE/+D to work on a +2A/+3?Does anyone know how compatible the two interfaces could be made with the +2A/+3? I remember that there were a couple of POKEs that could get a +D t…
... +2a is that the old ROM-CS line on output
port ... there: there are now two ROM switch
lines in previously ... chips), and the 12 volt line on pin 21 (upper)
line,
eventually killing your Spectrum ...+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…
... -- more on that below. Line 20 loads the rtype loading ... available at that time. Line 30 loads the game snapshot ... into 8K-16K, overlying the ROM and then jump to " ... the program returns at line 1510 where the carry ... so that the Spectrum ROM reappears in the 0- ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... similar. The time the /INT line is held low can be ... , the first byte of the ROM (DI, 0xf3) would cause a ... secondly a bug in the ROM's NMI routine. It was ... intended that the ROM would jump to the value ... test was reversed in the ROM, so it would jump to ...ZX in FPGA...Hmm..seems nobody is interested in a replacement PCB with FPGA...well..heading towards next FPGA projects then...C64 and others (o; [ This Messag…
... /> Verilog is much more in line with how I think of ... IDE for hard drives + CD ROM, PS/2 mouse connector and ... not including hard drive/CD ROM). This is not a single ...Program sizeI am typing a basic program into a ZX and I need to find out exactly how much memory it is using. Is there a way to calculate this? :confused:
... /> An unused routine in the ROM is used that subtracts the ... of memory (including the 16K ROM) that is used so this ... you type into the edit line (65536-) reduce free memory further ... caters for any section of ROM and allows for maskable and ...Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... compiled with the following command line:
tasm -80 -b -f00 ... /> .byte ;I register, points to rom spare locations filled with $ff ...IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... ;interrupts. Jump to 0056 in ROM
jp 56 ;for ... and move to next char line
CALL AChar
... and move to next char line
CALL AChar
... ; *256 to get next line
LD A,(DE)
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... interrupts. Jump to 0056 in ROM
jp 56 ;for ... and move to next char line
CALL WriteBlankSpriteChar
line
CALL WriteBlankSpriteChar
line
LD A,(DE)< ...Sparky eZX-BASIC Project in need of FPGA ExpertYou probably are not familiar with this project, but it is a computer system based on Zilog's new eZ80 chip and the OS is a superset of ZX BASIC. Ju…
... make a request one scan line before, but that could be ... flash memory for program rom, sprite rom, background rom, etc..sometimes 6 different ...New Turbo-Load version of Tales From A Parallel UniverseNot very interesting to most, but I know some of you still use 'real' Spectrums. While fiddling around with a program I created ages ago to build c…
... and returns to BASIC at line 30 once loading has finished ... (rubbing out the turbo code!). Line 40 is the call to ... just a copy of the ROM loader routine which has been ...is it easy to learn z80 machine codewell is it?
... /> Hmm, my memory of Speccy ROM routines is hazy, but aren ... :
PRINT IN INPUT LINE
LD A,1
If you could re-design the Spectrum...Let's suppose you could go back in time to the beginning of the Eighties. The Spectrum is being designed as the revolutionary successor to the alread…
... an addition to this, the ROM would need to be modified ... handler in there to support line and circle drawing in 512x192 ...New Functions for Sinclair BasicA total of 52 new functions can be added to Sinclair BASIC; 26 numeric functions (A-Z) and 26 string functions (A$-Z$). Owing to the internal structu…
... line 0 cannot be entered in a normal program (using the ROM ... editor), if you poke a line's line number bytes ... 0, it becomes a protected line.
You can't ...
