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A tidy loader for minigamesThe minigame competition doesn't permit the use of separate loaders like [code]10 LOAD "": RAND USR 32768[/code] The loader must be included in the b…
... /> [code]LET a = PEEK 23635 + 256 * PEEK 23636[/code]
bytes)
10 3
... code]
Overhead = 17 bytes
===========
Deep ... byte or two, by using the line number bytes for something ... -
Back to BASIC[U][B]Archaeology guide to programs compiled used MCODERII.d[/B][/U] After various people have been talking about "Frank'n'stein" I decided to finis…
... lower case. The first two bytes pointed to by NAMES ... named (you can confirm with PEEK (NAMES+2)=97)
bytes. As all possible ... are pre-defined 480 bytes are automatically in-use ... variables x 6 = 468 bytes + 12 byte header preamble). ... -
Machine Code ChallengeHere's a challenge for all you Z80 programmers. Points to be awarded for elegance and brevity. (I haven't got the solution either) HL addresses the …
... need to test more than two bytes, I POKE the test values ... located at 32768 and then PEEK the two bytes. Closing date is midnight ... -
POKE, PEEK and RANDOMIZE USRAnyone got a store of useful POKES, or RANDOMIZE USR statements with interesting effects? As a start, try anything from RANDOMIZE USR 1216 to RANDOM…
... br /> 20 LET B$=CHR$ (PEEK N)
30 PRINT N ... ,PEEK N;" ";
40 IF PEEK N>=32 ... B$
50 IF PEEK N>32 THEN PRINT ... program.
There are two bytes before the start of the ... basic ascii and the two bytes before that are the ... -
New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…
... poke:
POKE PEEK 23633 + 256 * PEEK 23634, 111
two bytes (corresponding to the first line ... LET A=PEEK 23613 + 255*PEEK 23614
20 PRINT PEEK A; TAB ... 10; PEEK (A+1 ... -
Checksum RoutinesHi there everybody, Does anyone have an 'off the shelf' assembler routine for generating checksums? Thanks Jim
... program works fine.
'PRINT PEEK 8007' gives the result '1 ... so only the first 64 bytes of the ROM are checked ... errors ensure that the first two bytes are always the same and ... -
48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…
... OK. In fact only the two bytes at $38FF (14591) and $39FF ... one with a custom ROM, PEEK 14591 does not return 255 ... -
Zx81I've been playing Bob's virus, which is really, really bloody good. I've never been into the zeddy but after playing it i fancy a mess around on one.…
... a note, I've purchased two RWAP ZX81 keyboards, and they ... /> 9999 PRINT PEEK 16388+256*PEEK 16389-PEEK 16412-256*PEEK 16413;" BYTES FREE"
Query about memorySo I know this has been asked a lot and I beg your brief indulgence. I have scanned through a lot of old threads already but I'm trying to improve m…
PRINT PEEK 23733 reads one of the two bytes that the ROM OS uses ... programming manual.
PRINT PEEK 23733
To be fair ...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…
... uses RANDOMIZE USR (+PEEK 23635+256*PEEK 23636) although I ... using VAL. VAL"+PEEK 23635+256*PEEK 23636" works beautifully ... use the code for PEEK (0xbe) in the ... for 1; each one two bytes rather than seven.
... saving the couple of bytes needed to embed the ...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…
... shorter using VAL. VAL"+PEEK 23635+256*PEEK 23636" works beautifully as ... to use the code for PEEK (0xbe) in the string. Have ... PI for 1; each one two bytes rather than seven.
bytes needed to embed the offset ...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…
... absolute
defw x80_fpeek ; peek
defw x80_fin ; in< ... /> double_a:
rlca ; two bytes per entry
ld l ... br /> ldir ; copy five bytes
ret ; end ...
; THE 'PEEK' FUNCTION
org 0x34fe
FZX Driver for z88dkAn fzx library for z88dk can be downloaded [URL="https://drive.google.com/file/d/0B6XhJJ33xpOWM2hWNjAxMVkxaEk/edit?usp=sharing"]here[/URL]. The libr…
... PEEK the system variable but it is made up of 3 bytes ... on top of the first two bytes of system variable FRAMES.
bytes plus the next byte in ... usually do something like "PEEK 23672+256*PEEK 23673" to read FRAMES ...OPUS Discocery DriveHi, since I am new here pls. excuse my bad English. I have a problem with 2 OPUS DISK Drive. One of them is working fine the other not. So I decided…
... in two bytes, and retrieved like this:
PRINT PEEK 30000+ 256* PEEK 30001 ... < 8192. Use the 'double' PEEK.
The keyword/token ...analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …
... ROM. It's only using two bytes for each counter, so it ... a=64000
8942 IF PEEK a=128 THEN
STOP ...
8944 LET b0=PEEK a:
IF b0> ... : LET b$=STR$ (PEEK (a+1)+256*PEEK (a+2)):
PRINT ...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…
[QUOTE]PRINT PEEK 23732+PEEK 23733*256[/QUOTE]gives you ... the address is 16 bits, two bytes need to be read.
PEEK 23733[/QUOTE] you are only ...Help With AY Music Program in BASICHi, last year I started writing a BASIC program for making and recording AY Music. I thought it would be easier than learning how to use Soundtracker…
... :
[code](65535*PEEK 23674) + (256* PEEK 23673) + PEEK 23672 [/code]
If ... need to use the lower two bytes of the frame counter.
two-dimensional string array to contain ...So where is the random number in the Speccy ?So I am messing around with ZX Spectrum Assembler and I want a random number. I looked up previous posts and one of the links said that random number…
...
49 if you PRINT PEEK 14000[/quote]
No, it ... 1; and compresses it into two-bytes; then puts it onto the ...AY musicThis is a format I'm proposing for an AY music player. If anyone can see any problems or anywhere it can be improved please say so. An AY music form…
...
In total 42 bytes
Finally is the ... loaction offsets plus a final two bytes for the end of the ... 1 bit looping point (only two are taken notice of before ...Solution for overwritten stack in 48k SNA filesIt has been known for quite some time now that the 48k SNA file format has one serious fault, which is described in the file formats section on the W…
... extended SNA file format for two bytes at the very end of ... format and the last two bytes are extra bytes.
Before making ... in the standard format (without two extra bytes at the end), it ... format, and leave the last two bytes unread.
I ...Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…
... chars and takes up 320 bytes.
* Tiles are pre-shifted ... tiles starting at
* 40960. Two bytes are used for each tile ... doing
LD A,(DE) ;two chars (16 lines) at a ... doing
LD A,(DE) ;two chars (16 lines) at a ...Tap files - exact specsThe FAQ says... [quote] TAP Format The .tap files contain blocks of tape-saved data. All blocks start with two bytes specifying how many bytes will…
... with two bytes specifying how many bytes will follow (not counting the two length bytes ... , including the flag and checksum bytes. Note that it is possible ... look at the first few bytes of an example .TAP file ... is to be believed) 19 bytes of the BASIC header, of ...ROM paging questionAssuming the Spectrum 128 memory map and port addresses, but two custom ROMs in place of the normal Editor and BASIC, what is the most efficient way …
... map and port addresses, but two custom ROMs in place of ... code needs to skip those two bytes when it returns.
Games that could do with running faster, without affecting the timer, the music or the controlsRegarding the topic on the emulation forum, what Spectrum games do you think would benefit from a speed boost? Nowadays, most of us play Spectrum gam…
... be hacked to contain the two bytes or so for each instruction ...Linux WAV to TZX convertorsI looked through the posts and seen a few threads about converting WAVs to tzx but none of them are working for me. I have a few old tapes that don't…
...
19 bytes as expected. The first two bytes should be the ...Character Array tape header block parameters?Hello all! Long time since I've been here! Hope everyone's bright and cheerful as usual! I've been trying to figure out the structure of a Spectrum…
... is always zero, but the two bytes of Parameter 2 seem to ...
