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SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... /> cp ctrl_enter ; test for enter
... if cursor is at start of line
routine
jr key_chan ; ... -
Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…
... test it.
0x00BC in the IF1 ROM is the "START ... -4" routine, the disassembly says that ... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... /> Here's a simple print routine which is very short and ... br />
[code]
; To test from BASIC:
; RANDOMIZE USR ... >>
PRINTRO:;test from BASIC (otherwise this first ... br /> add hl,de ;HL=start of graphic's bit pattern ... -
Programming again with the ZX SpectrumI am going to take a blast at programming for the Spectrum again. Its bee a long time since I have done this. I need to refresh my memory and maybe l…
... anything. But if you must start with BASIC, again, do it ... , Spin or FUSE, emulators to test it).
Remember in ... write your own character-print routine instead of using the one ... -
Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …
... here from 37093 (graphics drawing routine)
; LD HL, ... LD HL,23936 ;original code, start of sprite buffer)
;( ...
LD A,(38400) ;test which tileset we are using ...
RET ;back to original routine
... -
Spectaculator & GENS4Im using Hisofts Gens 4 assemler with Spectaculator and getting an error: [B]Bad Name[/B] when I try to assemble and save the file to a TAP. Assemb…
... br />
[code]A,,TEST[/code]
isn't ... />
[code]A,,1:TEST[/code]
The command ... as a file named 'TEST' on the catridge in ... keep adding to the 'TEST' file as it assembles ... the ROM save routine to save it out (start tape, press ... -
Interface 1bis updateSupport for connecting a standard PC keyboard to the interface?s PS/2 socket, in place of a mouse, has been added. The external keyboard?s output is …
... can assign the correct output routine when a ?B? channel is ... , it will reply with ?Self Test Passed?, followed by the device ... connected. The patched KEY-SCAN routine at address #028E of the ... the interrupts generated by the start bit (falling DT line and ... -
Tile engine and slight colour flickerOver the past few nights I've been working on a simple tile game engine for a rock fold game I'm making. While all is going surprising well I've not…
... /> Knocked up this basic routine to test it. Hate how I ... DEFW 18176 , 22528 ; row attribute start
DEFW 16416
start
DEFW 16448
Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…
[QUOTE=Dock;774114]Experimenting more has lead me to realise the limitations in my own code, so I'm going to try to keep it as simple as possible. Next step is to get the game responding to certain tiles as collectables or switches.[/QUOTE]
...Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…
[QUOTE=Battle Bunny;774142]Here's some extracts from a program which I've been working on recently, which illustrate some methods to consider. An exhaustive commentary follows ...
[code]
35 LET j1= 0: LET j2=-1: LET s=1: RETURN
...48K Ram Check Command not workingI am trying to repair my Spectrum 48k. It is having issues loading games, sometimes they load all the way to launch and then the speccy resets. Oth…
... use the Microhobby RAM test program. It will tell ... resume loading, as the test requires you to stop ... the check routine. As you are going to test a ... . Then start the tape to load the check routine (very ... short)
The test itsef ...Banked memory running slower?I've just compiled a TAP which includes bank6, it loads ok, but the routines that are paged in run slightly slower. The Z80 snapshot has no such pro…
...
So the counter routine starts running, then when the ... out of the counter routine and runs the next ... tip for a bit of test code; when you do ... breaking anything. Then your routine can detect whether it ... of NOPs at the start of your routine, you could pass ...assembler for PcHi guys, I'm in the process of teaching myself machine code, and wondered if there is a good pc program for writing code. Or is the best thing to use…
... the compiled .TAP file, to test it.
You can ... file or whatever. You can start with a standard 48K loader ... call the shortcut headerless-load routine from the ROM to load ...Spectrum +2a memoryHi all, Happy New Year. A quick question, I have a Spectrum +2a that I am seeing a very intermittent fault, once every 20 - 30 power ups. I plug…
The +3 start up diagnostic is actually more ... accessed via QAZPLM on the test card :)
It walks ... , as opposed to the diagnostic routine which just sets 0x00 and ... />
Only thing the startup routine won't catch will be ...Small Machine Code Routines Which Maybe UsefulAs part of creating Flynn's Adventure in Bombland I created a lot of little routines to do all sorts of things. A lot of these I created based on inp…
... from HeyHey16k as a demo test:-)
NB - feel free ... screen, used in ASCII print routine
ld a,h
routine
push de
call ...Variable sized tiles /tile routineHow would you do a variable sized tile routine where the tiles have position variables too? Thanks would be interested to learn :)
... it with a character-PRINT routine.
First off, design ... a one-character print routine. Make the PRINT routine able to ignore ... your PRINT routine either just before or just after this test.
start of the data for each ...New game: SETO TAISHO VS YOKAIHello Spec-chums! At last, my new game is available for download: [img]http://www.alessandrogrussu.it/zx/Seto-art.jpg[/img] [b]Features:[/b]…
In kempston joystick routine is small bug. ... This game set and test other bits of register E ... A,(C) or replace joystick routine with this version:
... Next way is autodetection before start game if joystick port ... port
AND #E0 ;test if D5-D7 = log. ...P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…
... ;863852"]Example 1: Delay copy start, so that PAL beam is ... high, in this case your routine needs to finish in under ... than assumptions, here is a test [url="https://cld.pt/dl ... area, is painted RED, on start and BLACK when finished.
P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…
... of visible frame, instead of start.
- loop unrolled LDI block ... rotate, and it's copy routine who must fill each line ... char in color (just for test)."
Having both ... for each possible offset/column start), with all the required screen ...ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…
... I see how your copy routine works.
So the ... the menu, so the loading routine can be copied into RAM ... It checks the ROM to test the version of the machine ... . I guess the copy routine to load it from ROM ... and then jumps to the start point of your code. ...Help needed with MIA software with custom (?) loaderHi, I've got into my hands recently a bunch of Polish educational software which are unknown MIA on WOS. I believe they are protected with some…
... of the required command class routine (ROM)
0x5B54 PUSH ... (ROM)
0x5B57 RET ; routine pass the command code to ... )
0x5B87 RET Z ; Test bit 7 of FLAGS: syntax ... ; Form the address of the start (ROM)
0x5BA1 INC ...Line DemoI was looking in the source code of another game (that Akalabeth game), with lots of line drawings. The difference was that they don't use the PL…
... low as possible for your routine, but I also noticed ... don't have time to test this yet but it ... If I am going to test this I probably have to ... test all the different (official) ... LDIR
FINISHED LD HL,START
PUSH HL
JP ...Startup colours of the Spectrum ROMHi Folks, Thought I would have a go at changing the startup colours of the Spectrum ROMs used within BasinC which ships with 48.rom (16384 bytes) …
...
// Trap the KEY-LINE routine
PutWord(@Memory[$0296 ... ROM to bypass the "Start tape, and press any ... 11B8], $00ED); // Trap to test for save
PutWord(@Memory ... 11E3], $00ED); // Trap 2 - Test and clear
PutWord(@Memory ...The state of source level debuggingI was just wondering if we can put on a table everything we collectively know about source level debugging for ZX Spectrum to get an overview of curr…
... address is STACK-BC ROM routine
push hl ; push ... state
ld a,b ; test bc
or c ; ... spectrum.
2. Start from breakpoint inside your program ...CASTLE CAPERSThe Dream Fairies have been kidnapped by the evil mouse king and his horrible accolites Use your magic to make blocks or holes and go up and down t…
... games:
- before each start game test joystick port after interrupt (in ...
Output of this routine:
A=0 = kempston joystick ...Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... this!!
[code];start routine here
;initialise board needs ... ,c ;
or a ;test overlay counter
jr z ... ;test if we've hit a zero bit to start adding ...Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... source here;
[code];start routine here
;initialise board needs ... ,c ;
or a ;test overlay counter
jr z ... ;test if we've hit a zero bit to start adding ...Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... Part 1: The print routine[/u]
routine a bit, as ... br /> or a ;test overlay counter
... test if we've hit a zero bit to start ... it being a small routine overall.
Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... placing this first bit, the routine self modifies to allow all ... ,next_right ;test if we've hit a zero bit to start adding ...
