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General purpose full screen input routineHi Folks, One of the things that annoyed me back in the 1980s with most BASICs was the lack of a full screen "formatted" input function. You could …
... are using the DATADD and DEFADD system variables here. Can you ... strings) in that space. Setting DEFADD to point to it enables ... the variables are global as DEFADD is only set once. To ... -
dungeon crawlerHi. I'm toying with idea of making simple dungeon crawler in spectrum basic and i actually got first version working somehow. [IMG]http://watashi.ic.…
... used for anything else unless DEFADD is reset.
[code ... -
dungeon crawlerHi. I'm toying with idea of making simple dungeon crawler in spectrum basic and i actually got first version working somehow. [IMG]http://watashi.ic.…
... *32). The two POKEs set DEFADD to point to this definition ... -
More memoryHi all... can anyone help, Is it possible to get more memory for basic pref' in Basin.... 40 odd k is just not enough !
... /> REM restore VARS & reset DEFADD, retaining compacted DATA array & ... -
+3 BASIC DOS_DemoI got side-tracked while working on the Op.Wolf conversion and ended up writing this +3 DOS utility which provides most of the disk functions that mi…
... that I had to reset DEFADD before returning and so the ... : POKE dh,k0: REM disable DEFADD redirection
923 FOR h ... -
Screens and BasicA question about the ZX screens. I am using software to convert my own art and drawings to the ZX Spectrum. I have some tools to change .jpg files in…
... $) & initialise
REM 23563 = DEFADD = address of DEF FN parameters ... -
Confounded DEF FNCan anyone see why this is going wrong? I've been tinkering with it since tea time and got nowhere. [code] 2 DEF FN t$(n,t,d) =STR$ INT (n/t)…
Rather than that unfathomable plethora of POKEs, the UDG area can be used to hold 21 single-letter variables which can be referenced in expressions and assigned values with LET, which is much easier.
[code]
10 DEF FN p(a)=PEEK a+256*PEEK (a+ ... -
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 SCANNING VARIABLE ROUTINE
org 0x26c9
s_letter:
call look_vars ; check for matching entry
jp c, report_2 ; error if not
call z, stk_var ; stack parameters
ld a, (flags) ; get flags
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…
IF EXIST?In MS-DOS scripting, there is an IF EXIST command that lets you check wether a file exists in disk or not. There are any way to check it out from BA…
...
ld hl,(23563) ;(DEFADD) holds start of FN o ...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…
... ; zero
ld (defadd), hl ; HL to defadd
ld (iy + _x_ptr_h ...SCREEN$ bug fixI've been using the SCREEN$() function recently for reading data off the screen rather than taking up space with an array and I got fed up with the s…
... /> ScrDol1:ld hl,(23563) ;HL=(DEFADD)
inc hl
inc ...Spectrum Utility Routines Compendium (pending)I couldn't make up my mind into which section to put this, so it's ended up here for some tenuous reason. I haven't forgotten about this. I've been …
... REM enhancement
** Using the DEFADD area for extra variables
Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …
Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …
... #2.
[code]
DEFADD: equ 23563
org ...
a63000: LD HL,(DEFADD)
LD BC,4
Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …
Here's a much neater version of my previous post. Using IX for addressing the parameters simplifies the assembler code. The original routine needed all its parameters to be correct beforehand, as it was only doing a check on y, whereas all of x, y, x+w, y+ ...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…
... HL, length into DE
;; DEFADD is the system variable containing ... error
ld ix,(23563) ; DEFADD
ld l,(ix+4 ...Double height text...<p>Is here any good routines for printing a font double height?</p><p>I've concocted this ridiculous routine but I'm sure it can be done much better.…
... /> DoubleHeight:
ld ix,(23563) ;(DEFADD)
ld a,(ix+6 ... /> SmallINT:
ld hl,(23563) ;(DEFADD)
add hl,bc
What am I doing wrong here?[code]IF INKEY$=SCREEN$ (21,4) THEN LET SCORE=SCORE+1[/code] It's delivering a positive every time.
... /> ScrDol1:ld hl,(23563) ;HL=(DEFADD)
inc hl
inc ...Speeding up programs by hacking the SysVarsPositively pleased to properly discover this area of the forum! I have a couple of recent tricks that might be of interest - they're probably old hat…
... name. The SysVars referenced are DEFADD, DATADD, SEED.)
In ...POKE taking a variable amount of time...Hi Folks, Does anyone know why the following POKE statements seem to vary in their execution time? [code]100 POKE 60000,10 110 POKE 60001,16…
... BASIC; you can use the DEFADD system variable within your machine ...
