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Strange INK behaviourThis weekend I hooked up two Sinclair ZX Spectrum with Interface 1 to try out the networking capabilities, and I ended up using parts of the Net Game…
... your program using any resident machine code or something?
Is your ... Spectrum, both programs work and print M with blue ink, as expected ... ), or an intermittent failure in lower RAM (maybe affecting the system ... -
Books that you just can't quit.Much as parts of the presentation,writing style infurates me, there is a book I just keep comming back to again and again. Its like the Yang to the …
[code]
1000 DIM R(55): ... screen with yellow strips on the top and bottom.
1090 CLS : PRINT ... target from screen and update score line.
1190 PRINT AT Y ... all letters are treated as lower case.
4020 IF CODE A$ -
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... at least using the ROM print routines.[/QUOTE]
SCREEN$ : POKE VAL "23739",CODE "o": LOAD ""CODE : RANDOMIZE USR ... at a higher address, with the decompressor stored afterwards. ... lower memory, and
' only decompressed to either screen ... -
coding guruOk I'm looking for a to help me in my quest to do my first proper game. The 80's child in me thinks he can do it, But the 2013 man in me knows zip. …
With the assembly or machine code,
set a series ... (print, border color, print at ect..)
3: print a character on the screen ... parts of the program in machine code. the guys on the ... performance coding. Share your code and for sure they will ... -
SE BasicAfter 13 years of development I thought I'd run out of things to optimize, but it turns out I was wrong. However, I'm now running out of time to work…
... or use a backward "rompatch" with a channel or some?[/QUOTE ... or COPY. LIST #3 and PRINT #3 are functionally equivalent for ... by CALL which calls a machine code routine and sets the appropriate ... program that dumps the whole screen. My printer channel would provide ... -
SE BasicAfter 13 years of development I thought I'd run out of things to optimize, but it turns out I was wrong. However, I'm now running out of time to work…
... br /> [*]CALL command for calling machine code.
[*]Chloe font specially ... /> [*]Load ULAplus screens with LOAD "" CODE 16384: RESET.
[*]Lower 16K ROM can ... [*]Save ULAplus screens with SAVE "screen" 16384, 6976
[*]SCREEN$() supports UDGs and ... -
SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…
... . Because I'm using the PRINT command to pass the parameters ... ]I need to test this with MIDI commands: should they work ... play MIDI notes from BASIC with the +DivIDE firmware, as it ... the lower ROM.
[quote]I did however prepare the machine code routines ... -
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…
... + _vdu_flag), 1 ; signal lower screen
call in_item_1 ; deal with input items
print position to top of lower screen
.ifdef ROM0 ... co_temp_3 ; embedded control code?
ret c ; return with carry set if ... -
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…
... , (iy + _vdu_flag) ; signal lower screen
call cl_line ; clear lower screen
res 0 ... BC
call out_num_2 ; print line number with leading spaces
inc ...
rst next_char ; get next code
ld hl, membot ; address ... -
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…
... ; print it
; THE 'CONTROL CHARACTERS WITH OPERANDS' ... lower
ld (echo_e), bc ; screen
ret ; end of subroutine[/code ... -
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…
... c ; return with carry set if ... print it
set 5, (iy + _vdu_flag) ; signal clear lower screen ... ; fetch a single key code
cp ' ' ... -
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…
[code]; THE 'LOWER SCREEN COPYING' SUBROUTINE
with echo-e
ex ...
call out_line ; print the line
ld ... -
Why?I'm just wondering why people are here? Why are we working on or using old hardware? Why are some of you putting a lot of effort in upgrading the ha…
... screen, drawing occasional large graphics in a speedy way that PRINT ... the Spectrum today, along with people happy to share ... to emulators with comprehensive debuggers, along with Z80 assemblers ... it seems that modern machine code development for the Spectrum ... -
Get rid of 'Bytes:' when loading codeHow do you hide the 'Bytes:' when loading code? I've tried saving as CHR$ 22 + CHR$ 6+ CHR$ 0 (a blank part of the loading screen) but it still appe…
... /> load ""screen$
Over 1 : Print at 1,0; : Load ""code : Over 0 ... your screen$ as normal
then save your block of machine code with ...
save chr$ 22+chr$1+chr$0+"Bytes:"code ... -
Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…
... lot about how a machine works by learning ... same view of the machine as assembly language (you ... print the result.
[code]
// assemble the following with ... m a bit rusty with ROM code
pop hl< ... is certainly not lower level than asm. -
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…
in machine code?
Well its a ... manipulate bytes
then print one to the screen
then learn ... that allows you to use machine code as well as another language ... />
255 is a byte with all 8 bits turned on ... -
dumping protected BASIC loadersI wrote this a few weeks ago but forgot to post it. It will load & list from tape/TAP/TZX any BASIC program which has been saved with SAVE, including…
... 759304]Loaders that had embedded machine code at the end of ... d like to try them with my routine and add ... dump of the embedded m/code section from the loader ... loader would fit on one screen if possible. One thing ... program will do that, with the 5 bytes named a ... -
TAPlist - the emulator versionI've got this working reasonably well; there's just a couple of small extra features which I want to add. (Recall that TAPlist writes a formatted lis…
... br /> STOP:
PRINT "no code":
STOP:
PRINT "bad margin":
with the runner set up to go. Although the m/code ... , as that will delete the machine code and then it won't ... what's happening on the screen - it's supposed to ... -
Fast and easy read/write of attributes?What are the fastest or easiest ways to check the attributes of tiles on the screen, in BASIC? It seems to be a great way of storing object info. …
... poking the attributes of the screen is actually pretty slow! I ... for BASIC.[/quote]
Using PRINT with OVER is faster than POKING ... store the whole screen in a string and print it all at ... ]I know absolutely nothing about machine code, and I think at that ... -
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…
... bit of test code; when you do something like PRINT USR 32768 ... , the register pair BC gets loaded with the ... , so will be printed on-screen. So if you put your ... 32768 : PRINT BC'.
Another trick for calling machine code from BASIC ... -
Early thoughts about creating a text adventureSo I always wanted to create my own ZX Spectrum text adventure. I tried looking at PAWs and GAC, but frankly I'm probably too stupid to use them. I…
... used my own tools, with a language that is compatible ... only if you use a lower version of Inform, and ... somewhat, and messed about with it. I know that ... the top third of the screen, so that you have ... need that. Some can call machine code routines, and others can' ... -
New Game(s): Sir Ababol 2 and Sir Ababol DXHere is our own Christmas Present from Mojonia! We weren't going to release these games (at least, by the moment) but we decided just yesterday to fi…
... means more menu code, and extra code in the key ... your program this code below would work with your LD A ... to WASD :-)
[CODE]number_of_keys equ 8
define_keys ... print_string ;rem will print in upper or lower screen depending on channel
Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …
... You can't move the screen display around in memory, ... machine-code program you can write all over them in memory with ... is all you get. Machine code programmers refer to this ... above RAMTOP. Any machine code routines you want to ... so stick to PRINT AT and ATTR!z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... . My machine code programs follow the Sinclair BASIC convention of PRINT AT x ... from the top of the screen and y is the number ... things and it just stuck with me
[/quote]
I ... of screen.
ld (xcoord),a ; set initial x coordinate.[/code]
Faulty Issue 1Hi all, thought I'd document my efforts in getting another speccy working. I've never done this before so please bear with me... I recently took a p…
... read a report of problems with lower RAM before and as the ... , the result is screen corruption but BASIC and machine code (eg a game ... a SRAM to replace the lower RAM.
[b][i ...ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…
... , it is possible to produce machine code games that have hi-res ... is possible to display images with pixel resolutions up to 256x192 ... (or with some, slightly larger as well ... use BASIC to print to the hi-res screen.
[b ...How to Poke a real Spectrum....Hi everyone. Can anyone remind me how to use POKES? (using a real Spectrum, not via the tipshop on an emulator). I've searched around and I can't f…
... ]LOAD "" SCREEN$[/b] and [b]LOAD "" CODE[/b] and either [b]PRINT[/b ... load and start the main machine code part of the game.
machine code routine to do the rest ... just a single line beginning with a PRINT USR instruction followed by ...BASIC Tenliners 2016I would like invite all basic programmers to this year's BASIC Tenliners contest. You have to code a game in 10 lines of BASIC. For details please ta…
... Would
[code]
10 PRINT "Lives:";10
[/code]
Be ... of symbols and spaces on screen)
B) 14 characters ... BASIC program is saved with all the variables intact, ... -written" machine code, so its OK to call the machine code routines that ...BASIC Tenliners 2016I would like invite all basic programmers to this year's BASIC Tenliners contest. You have to code a game in 10 lines of BASIC. For details please ta…
... Would
[code]
10 PRINT "Lives:";10
[/code]
Be ... of symbols and spaces on screen)
B) 14 characters ... BASIC program is saved with all the variables intact, ... -written" machine code, so its OK to call the machine code routines that ...
