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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…
... the internal structure of Sinclair BASIC, the best place to ... partially compatible with their Beta BASIC equivalents. Some of the ... with 16-bit numbers in BASIC would be tortuously slow. ... to permit compilation with HiSoft BASIC.
[code]
... -
Restore Registers Returning to BASICI should really know this, but I've not written code that requires a return to BASIC for a loooong time. What registers need to be preserved / resto…
... that requires a return to BASIC for a loooong time.
BASIC after calling machine code? I ... /> [*]Registers (which ones)?
[*]I register?
[*]Stack (to previous value ... -
R@re (maybe?) BASIC Programming Manual with Typo'sI'm listing a potentially r@re manual as discussed in:- [url]http://www.worldofspectrum.org/forums/showthread.php?t=13193[/url] [url]http://cgi.e…
I'm listing a potentially r@re manual as discussed in:-< ... -
Madness or inaccurate docs: RR r/RL r?According to the Z80 User's Manual, the instruction RR r/RL r should rotate the carry flag into bit 0 or bit 7 of the register in question (bit 0 or …
... Manual, the instruction RR r/RL r should rotate the carry flag ... or bit 7 of the register in question (bit 0 or ... -
If you've got a real working MF128,IF1, and MDR combo can I ask a favour?So, if you do have a real Multiface 128, Interface 1, Microdrive and, oh yeah, a Spectrum (48k or 128k) that are all working, can I ask a favour...? …
... /> (a)bort
(r)eturn
CAT ... com
;
; From BASIC invoke with:
;
... exx ; save return to basic address
push hl
basic address
pop hl
register
ret
... -
BASIC Keyword ReferenceRealised that the Sinclair Basic section would be a better place for discussion of BASIC keywords, so for reference the old thread is in [thread=2005…
... E : SYM + V RUN : K : R
FN : E : SYM + 2 ... E : E
INT : E : R THEN : KLC : SYM + G
BASIC listing.
Break ... -
Vector font in BASiCHi guys) Some fifteen years ago I saw a quite short BASIC prog that could simulate a vector font with size/ thickness/ italicization params. I remem…
... 3: LET a$="N O R M A L": LET ... LET a$="E X T R A B O L D ... 410 INK 5: LET a$="R": LET y=112: LET x ... WAY UP, READING L TO R"
810 PRINT ""
... "2 = UPSIDE DOWN, READING R TO L"
830 PRINT ... 1440 PRINT "THEN, WRITE YOUR BASIC LINES TO"
1450 PRINT ... -
An update on ZX BASIC support for the SpectranetOne for zxbruno, I hope :-) So just an example of what now can be done with the network filesystem and BASIC. The following listing is of a program …
... the network filesystem and BASIC. The following listing is ... 1000%fopen #4,"games.lst","r"
1010%oneof 1200 ... #5,"Instr-"+f$(k),"r"
2080%oneof 2500 ... this on the Spectrum, using BASIC and streams:
BASIC. You can PRINT # ... -
[MOD] R-Type IIII suppose it makes sense now to register [URL="http://www.worldofspectrum.org/forums/showpost.php?p=401659&postcount=15"]R-Type III[/URL] back in the…
I suppose it makes sense now to register [URL="http://www.worldofspectrum.org/forums/showpost.php?p=401659&postcount=15"]R-Type III[/URL] back in the archive as a mod... -
saving part of a BASIC programHere's a short routine to save part of a BASIC program. The idea is that it can be merged into a program and then used to save sub-routines, etc. to …
... to save part of a BASIC program. The idea is that ... a0=prog
9992 LET r=0: LET l=a1: GO ... =a0-4-l2:
LET r=1: LET l=a2: GO ... -
WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …
Hi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place.
Thanks everyone so far, I feel I am making good progress.
Reading the book ZX Spectrum Games Master. Its a great start ... -
Ideas for speeding up this BASIC routine?This loop can take up to 2 minutes to run, depending upon the content of the screen being scanned, about 70% of that time being taken up by lines 105…
... time; it's just the BASIC that I'm asking about ... -
Using R as a loop counterThis is just something silly I've found a while back. xD [b][How-to][/b] Setup your routine like this:[code] ld a,X ;see below ld r,a loop ;your …
... ,X ;see below
ld r,a
loop
; ... from the final 'ld a,r: jr nz,loop' commands) ... br /> and #7F
ld r,a
.l2
nop ... /> inc b
ld a,r
jr nz,.l2
register, yay!
So ... -
multi-scroll m/c subroutine for BASICArising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. whe…
Arising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. where width is -
Returning to BASIC from asmI never had to do it till now but there is always the first time :) At machine code program start I preserved SP register and all the other ones. A…
... program start I preserved SP register and all the other ones ... I get "[B]Nonsense in Basic"[/B] :(
What could ... -
MOVE_M Object Movement Manager for BASICAs moving things around on the screen is usually the slowest part of a game written in BASIC, I've been pottering around with this routine to handle …
... automatically call NOTRAP to restore BASIC:
REM To ... ; MOVE_M moving object control for BASIC
; runs with interrupts ... ; exceptions are dealt with from BASIC
; object properties are ... $028e KEY_SCAN the DE register and the Zero flag
Type-in BASIC contest on Reddit.Not sure how WOS-legal it is to mention/link to other forums, but Reddit is having a contest on r/retrobattlestations, asking readers to type a speci…
... r/retrobattlestations, asking readers to type a specific animated screen in BASIC ...STP: Query about Dizzy prince of yolkfolk and MakeTZXI'm trying to create a TZX from my copy of Dizzy Prince of the Yolkfolk using MakeTZX 2.31 (not sure why I'm not using 2.33), but I can't seem to get…
... seem to get the basic loader to register correctly.
I ... neither BASIC header (blocks 1 & 3) seem to want to register ... . Note that both L & R channels of both sides of ...The I register and IM 1Hi al! I've been doing some coding, replacing the BASIC ROM with my own code and upon examination of a few 16Kb cartridges, all the ones I've look…
... doing some coding, replacing the BASIC ROM with my own code ... to say about the I register, apart from its use in ...Help With AY Music Program in BASICHi, last year I started writing a BASIC program for making and recording AY Music. I thought it would be easier than learning how to use Soundtracker…
... year I started writing a BASIC program for making and recording ...
194 POKE USR "r"+x,y: REM Stop Symbol ... off(0!)
325 LET r=0: REM Recording Channel - might ... INK 0;AT 7,16;"[R]ec:"
1296 PRINT ... idea
2121 IF INKEY$="r" THEN PAUSE 5: LET ...Empire - port of trs80 basic programBack when I was a little kid, I had the opportunity to play around with a trs80 model 1 with level 2 basic. One of the games I often played was call…
... model 1 with level 2 basic. One of the games ... came across the full basic source and decided to ... it over in C. Basic being basic, there's a lot ... machine.
Original basic source: http://willus.com/trs80 ... to E M P I R E . . .
Basic programming for kidsHi there I'm thinking strongly of getting my kids to program with speccy BASIC. Both have Android tablets, so I can get two bluetooth keyboards fo…
... kids to program with speccy BASIC. Both have Android tablets, so ... with tapes and the dreaded R Tape loading error...
BASIC program to see what happens ...The HL Register Pair Naming. An Observation.This isn’t really a question or a tip. Just an observation about the naming convention of the registers in the Z80 CPU. It seems that every register …
... CPU. It seems that every register other than the HL pair ... [/b]—[b]F[/b]lag register
[b]I[/b]—[ ... vector
[b]R[/b]—Memory [b]R[/b]efresh
register [b]X[/b]/[b]Y ... /> Then come the good-old register pairs:
[b]SP ...how do i get more udgs on the spectrum in basic?how do i get more udgs on the spectrum in basic? i know there r only supposed to be 21 but is there a way of getting more in basic? i know its doable…
... on the spectrum in basic? i know there r only supposed to ... way of getting more in basic? i know its doable in ... do i do sprites in basic?The I register pointing to $40–$7f causes ULA snow and a crash. Or does it?I have heard it from numerous sources, including a few members of this forum, that 128K/+2 machines crash if the I register points to a range of $40–…
... machines crash if the I register points to a range of ... (active while we’re in BASIC)
ld bc,$7ffd
"Monty Hall" problem in Spectrum BasicFollowing a rather odd conversation with my wife regarding the probability puzzle "[url="https://en.wikipedia.org/wiki/Monty_Hall_problem"]The Monty …
... if they do not. Obviously, BASIC was the tool of choice ... initialise counts. S = Swap, R=Stick
60 LET s ... ;"+ D:";d;" C:";c;" R:";d$(d)
220 IF ... d$(d)="C" THEN LET r=r+1
230 REM ... /> 390 PRINT "Stick: ";r;" of ";t;" (";r/t*100;"%)"
400 ...ZEsarUX-7.1Hi! There’s a new stable version of ZEsarUX, version 7.1! The next 24th of September it will be 5 years old :) So this is a special anniversary…
... with tokens), .baszx80 (Basic ZX80 with tokens), .baszx81 (Basic ZX81 with tokens ... ), Z88 basic files with tokens ... setting --random-r-register to generate random value for R register on every cold ...converting sna to tapsince i'm struggling to find a simple sna to tap converter that works fine on gnu/linux, i'm about starting to code one on my own (using a scripting …
... works
the zxspectrum-basic loader would be like: ('rem ... ) and "R" ($14) means, and how to set "F" register (perhaps only ... , 0 for DI]
$14 R
$15 AF
$17 ...
