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Hacking the ZX Spectrum 48K ROMHi Guys, I have modded my Speccy with a dual boot ROM loading on first bank the original ZX kernel and on the second bank an enhanced version. I h…
... , especially multibyte ones (e.g. low/high byte order), so you don ... -
+3 - beeper sounds but no AY musicHi guys I am repairing a plus 3 revision 2 board that had no sound at all. Using schematics from https://zxnet.co.uk/spectrum/schematics/ I manage…
... output is simply a digital low/high signal. In the 16k/48k ... -
TR-Dos converting problem.I take a .tap file. Then I use the program tap2trd and convert it. I got a .trd file. With the program Samdisk I'll transfer it to disk. But the conv…
Trdos after first init shift zx basic in zx ram about 112 bytes, then very low original ramtop in basic loaders must be often higher here. -
What Good Serious Successful Software Was Written Exclusively in 128K BASIC?I realize now that 128K BASIC has its serious enthusiasts . But I know very little about this type of BASIC . What good titles were written exclusi…
... 48K was massively oversupplied with BASIC programs because it was ... was often pretty low and sometimes "rubbish" BASIC still got published ... seems was done in 128k BASIC ( I still cannot believe ... thread potential here "Rubbish" BASIC programs of 1982 and 1983 ... -
Any interest in new low-cost mass-storage interface with 512K RAM?I've recently added support to ResiDOS and the +3e ROMs for SD/MMC card interfaces; in particular, ZXMMC (which has no onboard RAM and so is only sup…
... interest out there for a low-cost interface based on ... optional packages which can add BASIC commands, handle hook codes, ... -trapping commands and functions for BASIC
[*]Some specially-written ... advantage of disk files in high-level C
[*]Modular ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... game it deserves a cracking conversion and I expect everyone to ... the entire colony to be high in order to please Earth ... to continue producing MULEs, the basic workhorse of plot developments. No ... game.
With the low level stuff there, it's ... -
+3dos BASIC Headers - Char and Number ArraysHi. I'm almost ready to release the first beta of "3eExplorer" my utility for extracting files from a +3e HDD/CF image. It's actually going quite w…
... BASIC header:
0x0f : Type
0x10 : FileSize High
0x11 : FileSize Low ...
0x12 : Parameter1 high : Start ... 0x13 : Parameter1 Low
0x14 : Parameter2 high
0x15 : Parameter2 Low
... -
Image to ZX Spec 1.2 Released (Video and high performance support)Yes I know it's only been about three weeks since 1.1 but I've been working very hard on this version and has a major work engine overhaul for multi …
... before asking questions about video conversion!
... - Added AVI and MOV video conversion (limited codecs however).
- ... /> - Added tap video/slideshow basic loader option.
- Added ... preview.
- Improved Low Error Atkinson dither to 25 ... -
ZX Flight - flight simulator (Basic)Yesterday I found this BASIC flight simulator on an old tape. Obviously this is a my type-in from an old ex-Yugoslavian magazine from mid 80s. I did …
Yesterday I found this BASIC flight simulator on an old ... landing situation in low visible environment, 2000 feet high and 20 000 ... also mostly done in the basic), we can say that this ... worthy competitor.
Unfortunately spectrum Basic is pretty slow for this ... -
Any diet debate in the UK? (Low fat or high fat food)I assume UK has the same problems with overweight and related health problems as most european countries. Are there any debate going on around for ch…
... discussion if food should be low in fat or actually high? -
Spectrum stuff online "buying skills". Are real skills needed for low cost Speccy items? Firstly , there are some pretty fundamental requirements that are probably too basic to mention , like buying the right software at the right pri…
... requirements that are probably too basic to mention , like buying ... came across was realizing that high priced electrical goods might ... needed for low cost items.
Low cost items ...
A "BUYING STRATEGY" for low cost items :- Choose a site ... -
TAP files for the TS 2068Hi, just recently bought a TS 2068 and found "Taper" on the web. Downloaded it and began to use it only to discover that it would not open TS 2068 fi…
... many years. Here's the "low down".
It ... or you could have a high resolution mode (512x192) with ... the standard and unmodified TS2068, BASIC code from Spectrum machines was ... has excellent TS2068 emulation and conversion utilities. Use it for all ... -
BASIC question (in both ways)hi, im fairly new to spectrum stuff.. I bought one a couple of days ago.. im trying to write a basic program that opens a window (drawn with DRAW com…
... to know about - the high resolution grid (used by ... and DRAW) and the low resolution used by PRINT.< ... pixels (though for standard BASIC this is limited to ... by 24 (again, standard BASIC limits this somewhat to ... of your PLOT/DRAW coordinates to multiples of 8.< ... -
MIDI-out disassembly?Does anyone have the disassembly of the MIDI-out routine or understands how text strings in PLAY commands are converted to a MIDI stream? I'm assumin…
... good when it comes to low level programming like machine code ... , and many of these other high level languages have very similar ... you wrote it in Sinclair Basic, that would be quite something ... reinvent the wheel, when some conversion tools already exist that we ... -
Real Spectrum screen flicker with SCREEN$I've written a basic loader to simply do a 'load "" screen$' based video from a divide+ however I'm finding the Spectrum can't render a screens and a…
... been working with screen conversion tools and small Basic and machine code ... automatic slideshow, use a low value and it will behave ... reason the memory is so high is because of the ... original and converted images during conversion of multiple files, would ... -
Newbie says 'Alreet?'Hiya dudes, Just dropping a line to say hello as i've decided at 33 to try and fulfill a long time ambition to write a speccy game in machine code..…
... means by 'mask bits for high byte' Why does he need ... />
He is converting character coordinates to an attribute address and ... the pixel memory and the basic program is stepping through it ... square. In this case the conversion sets SSS=0 so that ... -
BIN2BAS (load BASIC text into emulator) utilityI've nearly finished testing this. It allows a BASIC program to be loaded from a text file in any emulator which has a "load binary" option. I was wo…
... the stack to that low address whenever it's ... switch back to the high address when it restores ... It will eventually hit the BASIC text file, but it ... 40027->65375. After conversion STKEND is at 48046, ... is the maximum (tokenised) BASIC program size which can be ... -
Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... data, finish and return to BASIC
cp 0 ; ... getting the screen location from coordinates.
get_screen_location2:
... ,a ; this is our high byte.
ld a, ...
ld l,a ; low byte.
ld a, c ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... back
ld l, b ; low byte of hl is now ... back
ld l, b ; low byte of hl is now ... is in collision map coordinates, not tile coordinates (so in range 0 ... performance over doing this in Basic though I think :)
Vote Spectrum! (One last time)I've written my last article for the Micro-mart computer world cup competition. This time - as I think you all already know - it's the FINAL against…
... by today 's standards, the basic A500 can still pack a ... then? Cost. Practically packed with high-spec hardware, the Amiga was ... drives, the best in-built BASIC I've ever used; it ... still do), because of its low cost that made computing accessible ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... 1 (as used by Spectrum BASIC), the processor simply executes an ... low byte from the interrupt vector.
* M5: 3 tstates: read high ... br /> * M2: 3 tstates: write high byte and decrement SP.
* M3: 4 tstates: read high byte of 'nnnn' and decrement ...TommyGun - Utility ... what's going on...For those interested, Tony has been busy lately and unable to put as much time into TG as he'd like. He also has a child on the way soon. He told me…
... out as a simple graphics conversion utility, then named "Speccy ... TG will not contain a basic interpreter/compiler or anything like ... work to develop, considerably high demand for it and willingness ... . The Commodore 64's high resolution mode will be featured ...Announce Pasmo 0.5.0Hello. I have released the 0.5.0 version of Pasmo, multiplartform z80 cross-assembler. A bunch of new this time: New tape image formats generated:…
... CPC;
with or without Basic loader.
8086 code ... this).
New operators HIGH, LOW, &&, ||, ! and conditional expressions ...Graphics in Basic??What is the fastest way to draw high rez graphics in Basic. Andrew.
What is the fastest way to draw high rez graphics in Basic.
Andrew.RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... channel must be created below basic
; so look ...
ld (hl),c ; low byte of the output routine ...
ld (hl),b ; high byte of the output routine ...
ld (hl),c ; low byte of the input routine ... ld (hl),e ; the low byte of the offset
super-quick games in BASIC?do you think, games written in BASIC could run flawlessly at high speed when run in a speccy emulator at, say, 1000% speed? (i wonder, speccy is rare…
do you think, games written in BASIC could run flawlessly at high speed when run in a speccy emulator at, say, 1000% speed?
(i wonder, speccy is rarely used in this way - it's even more platform independent then JAVA! :-))) )It's a trap!So I got a CPLD (not the eventual one I want to use for the ethernet project - rather, one I actually have here and now, an XC9536 in a PLCC44). And…
... in, A15OUT is held high (A15 on the through ... ROMCS, and hold A15 high. But I don't ... MREQ went low before grabbing ROMCS and asserting A15OUT high (the ... of interpreting the line of BASIC at CH_ADD. As a ... that's normally illegal in BASIC into a program.
...Understanding extensions to the BASIC parserFor a while, I've had a rather 'rinkety dink' extension to BASIC via an RST 8 trap in hardware, just so that I can send stuff to a Spectrum over ethe…
... rather 'rinkety dink' extension to BASIC via an RST 8 trap ... a replacement ROM) have a high level overview of what you ...Looking for an extended BASIC graphics routine from mid- to late-80sHello all, This is my first post here so please go easy. This is basically a cut-and-paste job from comp.sys.sinclair where I've had no luck with an…
... I've discovered a small BASIC program that makes use of ... ' commands from a typed-in BASIC extender program. Alas the machine ... /> (where X and Y are coordinates and I is the INK ... one I'm after. Most BASIC command additions used * or . before ...
