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logical operators and the calculator stackI was wondering if there was a utility which would provide the list of commands needed for the ROM calculator to evaluate a logical expression. For e…
... using Z80 instructions? (unless your variables would were all floating point ... ;Make some space into the BASIC work area. DE points to the ... need to deeply interact with BASIC variables in a C/M program ... -
Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... to micro-drive), a simple BASIC program would load part one ... make the calculation easy. The BASIC load filename may corrupt some ... an emulator and go to BASIC in 48K mode.
Type ... to avoid the system variables and BASIC program area.
EDIT:
Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... into screen area to make room for the basic. then a ... the image avoiding the system variables and BASIC area.
It ... need some room for the BASIC program area and then the actual ... ]
The following BASIC program will boot Cybernoid:
Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... proposal seemed very efficient and basic is the only thing you ... -drive then maybe the system area could be minimised to store ... (182 BYTES) and the BASIC program area cut down below 24064 with ...Override AUTOLINE start?Hi there, Is there a poke that prevents a BASIC program from auto running, when it was previously saved with the LINE command? Cheers, Steve
... the editing area,
; immediately after the BASIC program area
... the last byte of the BASIC program area
call $19e5 ... ; RECLAIM-1 - clear the BASIC program area
l_5b0b: ld ix ... of the variables
ld de, (l_5b5a) ; area (if there ...ZX BASIC and garbage collection...Hi Folks, I was thinking about using the following approach in a program I am writing: [CODE]DIM d$(100,50) LOAD "NAMES" DATA d$() ... DIM d$(50,25…
... garbage collection etc.?[/QUOTE]Spectrum Basic doesn't have any garbage ... $ string is stored. Essentially, the variables area is just an extension of ... the program area, and variables are effectively treated as ...Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... them as system or user variables.
Or not ... for who? Surely not the basic system.
... the spectrum's system variables in the 1k hole ... are now. The system variables area was also meant to ... organization to splot a 16x16 area on screen:
Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... for who? Surely not the basic system.[/QUOTE]
Surely ... 35-40K monstrosities in sinclair basic :lol:
[QUOTE ... Alcoholics Anonymous;511112]The system variables area was also meant to grow ... least to 16K; now the basic Spectrum had 16K and... ;)< ...Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... large chunk of data in BASIC. It occurred to me ... address in the CHANS area to call the keyboard ... thought about the separate variables area used by user-defined ... I knew how the DEFADD area was laid out. I ... not zero it scans that area first before checking VARS, ...New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…
... can't overwrite the BASIC loader with C code ... attribute file - including the system variables area) was for malloc(), which ... can overwrite the system variables and BASIC loader without any problem ... things were situated above that area, like the start address ...MicroSpeech Entry PointsHello Hardware Guys, Do any of you have any information regarding the MicroSpeech ROM. In particular: 1) Do you know what addressess cause it to p…
... ;541507]Any info on the BASIC var assignment monitoring address?[/QUOTE ... point. The ROM searches the variables area during every interrupt and buffers ...ESXDOS v0.8.0 released (with NMI Browser)Hello, To celebrate the speccy's 30th birthday, here's the latest version of ESXDOS for DivIDE users. The full changelog is too long to post here, s…
... commands shares the same memory area.
using syscalls is ... i see here is evaluating Basic variables and expressions, as external command ... executed from divide ram, zx basic is not accessible. so maybe ...DooM on Spectrum 128kHello my fellow WoS'ers My hope is that you can help me, recently I discovered a DooM clone -esque on the Humble spectrum, - here is a [URL="https:/…
... keeps overwriting the +128k system variables area from 23296, and pressing a ... routine to restore the system variables before the next screen, otherwise ... much room for a complicated BASIC loader, so I'm using ...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 !
... separately, or embedded in BASIC as explained in "saving time ... br /> 9952 CLEARs the variables except for the compacted DATA ... allocate a protected area for those variables in its parameter ... x)=0:
REM protected variables area:
REM y$= new ...SAVE writing zeros after program?Hi there! I hope this is the right forum, but I didn't find any other more appropriate... I'm trying to recover some very old tapes with stuff I mad…
... the UDG data within the BASIC (ie. when the ... occurs after the BASIC - ie. in the VARS variables area - then a ... and leave you with the BASIC. However, if the ... will remain corrupted. The BASIC prior to the error ... should confirm that the BASIC prior to the error ...16k programmingHi all, If I want to code something for a 16k (or any spectrum) my understanding was that if I CLEAR below 24064 and put all the code above it up to…
... assembly program never returns to BASIC, it will have about 250 ... the program area itself) before it reaches the system variables area. This is ...Full 16*16-digit BASIC multiplicationI liked Andre Adrian's 32-bit long multiplication routine so much that I decided to a decimal version. After all, 2^63 is only 9223372036854775808, a…
... be declared sequentially in the BASIC, as the program expects ...
;transfer the 8 BASIC variables into 8*2-byte registers ...
;16 bytes copy area
COPY: equ WORKSP+ ... address, DE=address in ANSWER area
push de
...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…
... single byte flipped so the BASIC interpreter starts to behave weird ... RAM (maybe affecting the system variables area)JSW2 - Game Loader DifferencesThere are three official releases of JSW2. I'm not counting the 'JSW2-128' version here as far as I'm aware this was not in any way 'official' as it …
... bytes) which extends into the basic and variables area a
ld (hl ... file) doesn't extend into BASIC, only into the printer buffer ... . This would break 128K BASIC but not do anything to ... 48K basic as the printer buffer would ...128 BASIC-compatible way of loading BASIC as code?On a 48K Speccy (or from 48 BASIC or USR 0 mode on a 128K machine), one can do a silly trick like this: [code];; load a 4000 byte BASIC program ld i…
... as the extra system variables area is incompatible between models. ... 65368
;save a BASIC program as headerless CODE
;load a BASIC program as headerless CODE
BASIC return
ld 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…
... Are you destroying the system variables area? If so, you may ... :
'
' +--------+--------+--------+- -+----------+--------+--------+--------+---------+----------+----------+
' | BASIC | GAME | GAME | HEAP |MULTICOLOR|GAMEPLAY ...z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…
... reading system variable LAST_K, like basic does, to get key presses ... some of those variables on top of equivalent basic system variables too, which ... to point into the system variables area. I'm not sure if ... and the stack at wherever Basic put it (I can never ...Which Emulator supports Betadisk48?Hi out there and happy new year, I'm looking for an emulator to run with my vision1.7 trdos-rom in 48 mode. Unfortunately most emus only support Bet…
... can be accessed through BASIC, the memory area between 15360 and 15615 ... disabled even in this priority area (see below).
... If = 0 enable (only the area 3C00h - 3CFFh).
Bit 7 ... 23866) + 256 extra bytes of BASIC variables every time a sector is ...Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…
... /> I've exported the System Variables at the point of running ... snapshot doesn't return to BASIC (it crashes).
I ... paste in a default System Variables area and try the snapshot from ...Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…
Well the System Variables area predefined by SJASM Plus was ... SJASM Snapshot (rather than from BASIC via RAND USR) but I ...that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…
... DumpVars which assigns a separate variables area for the routine so its ... -contents.htm]Compendium[/url] file Variables.TXT).
I ... set it up, load the BASIC, GO SUB 9990, assemble the ... the BASIC. Lines 9991,9992,9993 contain the saved system variables ...ZX-Modules app reportZX-Modules app report If You are interested, I want to report about the state and progress about my ZX-Modules programs. I would like to report at l…
... reader now recognizes the BASIC program and variables area, as well as RAMTOP ...64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... when compared with the game area. The overhead of having to ... IX to point to a variables area.[/quote]
C, in this ... up writing C and ZX Basic interfaces.[quote]
[*]Constructing the ...BASIC problem in SpectaculatorI have a piece of music written in +3 BASIC in spectaculator (using FOR LET, PLAY and NEXT) and when it auto loads (because of save "tune" LINE 10) i…
... Spectaculator isn't reading the BASIC file header correctly.
... (23628)[/code]
from BASIC.
If the values ... the debugger to examine the variables area (from the address pointed ... the variables themselves are being saved correctly, but the BASIC ...48K Memory MapHi, I'm having some trouble understanding the top of the 48K Memory Map. From reading elsewhere I have this as the memory map: 0 to 16383 - …
... of the available memory for BASIC programs from the standard 23755 ... attached, for example, the system variables area is expanded to create microdrive ... pushes the start of the basic program upward. You can ... things move around as the basic program is edited and ...
