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Find-Fill-Copy functions for BASICThere's not much going on here, so here's three m/code routines to provide some data manipulation functions which are otherwise slow to do from BASIC…
... each routine, using either:
"PRINT USR r0,p1[,p2...,pn ... at the end of the assembler listing is so that routine ... -
Is it possible to access the +3 disk drive via m/c in USR0 mode?Is it possible to access the disk drive of the +3 via m/c +3DOS calls when running in USR0 mode? I ask because I'm having an awful lot of trouble ge…
... sp ; 36864
ld bc,$7ffd
ld a,($5b5c ... doing a CLEAR 49050 before PRINT USR 48796)
ei ... here
ld bc,1
here push bc
out (c),a
pop bc
ei
...
di
ld bc,$7ffd
ld a,($5b5c ... -
Print Screen not Working on Windows 7I know I know this is chit chat and not a tech support forum. I ask here because the info on the web about this issue is generally shyte. I'm asking …
... the feature of pressing the "Print Screen" to commit the current ... but screen dumping via the print screen feature does nothing.
print screen key on this laptop ... how can I restore my print screen feature, I've tried ... -
Any Z80 native assembler with source code ?As in the subject - I am looking for native Z80 assembler that comes with source code.
As in the subject - I am looking for native Z80 assembler that comes with source code. -
For Sale Box no.20Morning all, another box of odd sized things. Box 20 Odd Shaped Things Laser Basic ? Ocean IQ 2 x Superchess 3.5 ? CP Software Superchess 3.0 ? CP …
... Raiders ? Red Shift
Zeus Assembler ? Sinclair/Crystal Computing
Wordspell ... Go ? Sinclair/Goldstar
Editor Assembler ? Picturesque
ZZoom ? Imagine ( ... /> Cargo ? Sinclair & Macmillan
Print Utilities ? Sinclair/Andrew Pennell
Procrustean PrintingHere's a short routine to manage printing of text with command tokens, to avoid messing up the screen when they are expanded. It just prints as many …
... equ $2da2 ;from calculator stack: BC
FPTOA: equ $2dd5 ;from ... ,GETARG
call FPTOBC ;BC=addr
ld h,b ... (hl) ;JP address
;PRINT USR stack,string_expression,max_length,substr ...Indirect Variable AssignmentHere's another wacky routine. This allows assignment of values to variables where the source & destination variables can themselves be defined in var…
... $ (a+64),"=",v;
11 PRINT USR id,v$,"=",v+VAL ... /> 20 NEXT a
30 PRINT valA'valB'valC
31 ... />
The syntax is:
;PRINT USR indirect,arg1,op,arg2 ... />
;Indirect Variable Assignment
;PRINT USR indirect,arg1,op,arg2 ...Undefine functionHere's a routine to selectively remove variables from the VARS area and reclaim the space. This can be done partially from BASIC already by assigning…
... passed from BASIC by:
;PRINT USR undefine,"arg1"[,"arg2"...,"argn ... br /> push ix
pop bc
ld b,c ;B ... ;variable name address
push bc ;variable name length
call ...DATA vs PRINT and OVERjust messing about and came across this alternative way of drawing a map....now before I start mucking about with my actual program.....is there any …
... any better than a simple PRINT instuction?
10 ... =1 TO 3: READ a$: PRINT AT m,1;a$: NEXT ... present etc
Would PRINT OVER be any use on ...Interview with VERONIKA MEGLER ("The Hobbit" programmer)This interview with Veronika Megler (The Hobbit) has been published by elmundodelspectrum.com in Spanish, I copy it here for you all in its original …
... C on Unix, and in Assembler on a PDP8. My first ... -80. We wrote it in Assembler, initially using a simple text ... some time period, it would print ?time passes?, and then all ... tired of writing and testing Assembler and wanted to do something ...Giving Away ZX Spectrum Collection Free - Adelaide, South AustraliaI will give away my collection of ZX Spectrum stuff to anyone who can pick it up. Please PM me if you are interested. [U]Books[/U] The Spectrum Oper…
... /> [U]Various[/U]
ZX8180 Print'n'Plotter Film
Posters ...
The Artist
Zeus Assembler
Machine Code Tutor
simplest method to pass a string to m/code?The statement "RANDOMIZE numvar+USR mc" is a simple way of passing a single numeric parameter to a m/c routine, as mc can retrieve numvar from the to…
... I know would be:
* PRINT USR mc,s$;: but that ... m(s$)=USR mc: LET bc=FN m(s$): whereby mc ...Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... sprite and text routines to print to the buffered display ... the stack pointer
push bc
push de
push af
push bc
push de
... read 16 bytes
pop bc
pop de
... /> push de
push bc
push af
...Shaded Desktop...Hi Folks, As part of some BASin testing I thought I would create a little program that creates a shaded desktop. In this case it goes from solid bl…
... /> 240 REM SLOW
250 PRINT b$
260 REM Castle ... =0 TO 31 STEP 2: PRINT AT 4,x;"\a";AT ... this could be done in assembler much quicker but not bad ...The ZX Spectrum on Your PC - print version (and discount)For those who are interested, 'The ZX Spectrum on Your PC' can now be bought in print (ISBN 9781471676215). You can see some pictures below. I'm ra…
... ' can now be bought in print (ISBN 9781471676215). You can see ...number padding functionI wrote a number padding function in BASIC a while ago, but when I came to want it again I couldn't find it, so I've done this enhanced [url=http://w…
... .asm]PadNum[/url] function in assembler. As per usual it's ... wider than the pad parameters print in full, as shown in ...Hep needed with a bit of code...I've written a bit of code to make a character move across the screen, but the counter stops at 29 when the 3 lines to delete the characters trail ar…
...
call 5633
ld bc, 10
ld de, 63290 ... do you copy and paste assembler files to these boards?40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…
... codes here 22= print at, (followed by ... djnz nextshiftline
pop bc
djnz nextshift
pop bc
djnz nextovershift
BeepFX ProblemHi All, I'm currently trying to integrate the BeepFX engine in my 100% Assembler Game and it plays the sound fine, but then plays the sound again, a…
... in my 100% Assembler Game and it plays ... /> add hl,bc
add hl,bc
ld ...
pop bc
dec bc
ld ...
pop bc
dec bc
ld ...Spectrum Print 'n' Plotter JotterSpectrum Print 'n' Plotter Jotter (the A3 one) Would also be interested in scans of the two pages it contained Chris
Spectrum Print 'n' Plotter Jotter (the A3 one)
Would also be interested in scans of the two pages it contained
ChrisCovering my tracks using OVERI've got myself in a bit of a mess again I'm afraid, the routine I have written is for 4 characters to move across the screen 2 spaces at a time in I…
... ld de,dat
ld bc,15
call 8252
print is 4 characters long and ... about correctly deleting the previous print.
After ... I'm also wanting to print chracters 'c and d' ... 4,29 as the print string is entering/exiting the ...Help needed...I am at my wits end with this pigs ear of a routine, can anyone simplify it and make it work as it should? Basically it should make the characters '…
... 2 characters.
The print is in OVER so it ... /> ld de,dat1
ld bc,13
call 8252
ld de,dat2
ld bc,15
call 8252
ld de,dat3
ld bc,15
call 8252
ld de,dat55
ld bc,15
call 8252
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 isGraph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…
hi! please, help with code:
[PHP]For x=-100 To 100
For y=-100 To 100
If (x/2-25)*(x/2-25)+(y-50)*(y-50)Problem with Page 7I've been experimenting with running code in page 7 (+3) from BASIC and I seemed to have got it sorted out but then it all went wrong. Firstly, I tr…
... ]
So I had "LD BC,$ffff : RET" in page 7 ... +7: OUT 32765,16+7: PRINT USR 65368:
POKE 23388 ...Assembler v Machine CodeHi. I've been looking at a lot of the code examples in the Development section and can see that Assembler is the way to go. However, I was wondering …
... section and can see that Assembler is the way to go ...Speccy clearout - GamesI'm having a big clear-out of a lot of Speccy stuff, so part one is the software. (followed by hardware at a later date) If anybody is interested in…
... /> Ballcrazy (M.A.D.)
BC's Quest for Tires (Software ... )
ZX Spectrum Machine-code Assembler (McGraw-Hill)
Zub (M ...I thought I'd give assembly a goAnd well being an absolute newb,I'm absolutely useless.I need your help. I thought I'd give this a go in zxspin [url]http://chuntey.wordpress.com/20…
... did this and typed ld bc,0 to line 4
Then after entering 10 PRINT AT 0,0; ?Your score ...
