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Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
I've finally got a BASIC version of the "visual FLASH ... the printing to a single space.
I had an ... at that point. The 'n' variable is just to indicate whether ... -
Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... ]I've finally got a BASIC version of the "visual FLASH ... the printing to a single space.
I had an ... at that point. The 'n' variable is just to indicate whether ... -
Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... = 1 // not returning to basic
#pragma output CRT_ENABLE_CLOSE = ... };
// Attach C Variable to Sprite Graphics Declared in ... hash); // redefine graphic associated with space character
sp1_Invalidate(& ... -
Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc. There is an interesting…
... it sets C's errno variable appropriately and returns a suitable ... to do with limited storage space. Now, I guess many of ... revolution-based functions, and also space for the extra set of ... a TAU keyword to Sinclair BASIC... :-)
There is ... -
Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …
... full 64K of addressable memory space to avoid having to page ... the first System Variable is stored, then comes your BASIC program, and ... variables for your BASIC program, and the stack space used by ... the z80 CPU.
The system variable ... -
New Game: The Order of MazesI'm pleased to announce my first full game release since Flynn's Adventure in Bombland 4 years ago. It is called The Order of Mazes and you can downl…
... method?
[/quote]
The basic maze generating code is around ... much, and I use some space which is overwritten by the ... maze specific things the overall saving between storing each level and ... -
New Game: The Order of MazesI'm pleased to announce my first full game release since Flynn's Adventure in Bombland 4 years ago. It is called The Order of Mazes and you can downl…
[quote="TomD;838493"]
The basic maze generating code is around ... much, and I use some space which is overwritten by the ... maze specific things the overall saving between storing each level and ... -
ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…
... the data into a string variable, this is slightly more ... the program and again in variable memory.
[3] ... available memory.
ZX81 BASIC doesn't support integer variables ... tightly into bytes to save space, but this would obviously ... -
Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... ="slenkar;857947"]
boriels basic must be doing something to ... /> ; First, we reserve some space.
LD IX,-2
;Finally, we free the space on the stack.
LD ... /> ; set up frame pointer after saving previous frame pointer
Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... it looks like Boriel's Basic does this as well. You ... />
The RESERVE macro reserves space (wSize) on the stack and ... /> The FREE macro frees the space from the stack, putting it ... re filling your structure), each variable is accessed using something like ...A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... timer and "o" exits to basic.
For this program ... /> };
// Attach C Variable to data declared in external ...Leading Zeroes on a Score in BASICI'm trying to print the score with leading zeroes such that it's always 6 characters wide, i.e.: 000010, 000150, 006100 etc. I quickly knocked thi…
... sometime.
My BASIC timing routine gives a reasonable ... (Declaring variables (ie. assigning space for them before they are ... works for all numeric variable types and DIMed strings. ... by removing any unused variable declarations and/or program ...Help needed with MIA software with custom (?) loaderHi, I've got into my hands recently a bunch of Polish educational software which are unknown MIA on WOS. I believe they are protected with some…
... ; Entry point for saving a master copy (from BASIC LINE 4)
saving the master copy and later ... NC ; If key pressed, finish saving
0xEAD0 LD A,D ... put it inside screen address space
0xEB74 LD D, ...Where does the BASIC program sit 48K Spectrum memory?Hi there First post so be gentle, I've had a spectrum since the 80's and have recently started programming it for fun again. I wrote the followin…
... does is set the system variable RAMTOP to 39999, which ... will only allow the BASIC program to expand up ... the little bit of BASIC that loads first and ... re-allocated within the new space under RAMTOP - if there ... br />
But from BASIC, there is no easy way ...Where does the BASIC program sit 48K Spectrum memory?Hi there First post so be gentle, I've had a spectrum since the 80's and have recently started programming it for fun again. I wrote the followin…
... that first CLEARs some space and then POKEs all ... 's roughly equivalent to the BASIC instruction:
... 't use just any variable in machine code. There ... one of my routines in BASIC would be:
BASIC.
Now ...48K (in 48) vs 48K in 128K / +2 / +3I'm sorry I've probably overlooked this but despite a search I did not see it. :( and looking at some of the tech pages did not really answer my ques…
... are in ROM 1 (the BASIC ROM) and are called during ... a bit in a system variable is set.
The ... there's plenty of unused space for it. Trouble was, lots ... of programmers used this 'unused' space (by default containing all FF ...RANDOMIZE USR, PRINT USR etcHello just wondering why is it called RANDOMIZE UsR what does randomising have to do with it ? When calling machine code routine from adress x you ty…
... it on A, taking some space from the variables area. If ... of BASIC.
- RANDOMIZE will put it on the SEED system variable ... . It may have some effects if your BASIC uses ... won't be returning to Basic (like most games), any option ...How to get more than 21 UDG's in BASIC?So with graphics mode under the G cursor how many UDG's can you do from BASIC is it 21? It's all POKE 65368 and above and it's sequential ABCD.... an…
... start from, to stop BASIC using that memory for ... easier to program from BASIC. It means your UDGs ... , so at least your BASIC is still readable. Use ... forget that this system variable points to 256 bytes ... printable character, ASCII 32 = SPACE, starts at 32*8=256 ...How to get more than 21 UDG's in BASIC?So with graphics mode under the G cursor how many UDG's can you do from BASIC is it 21? It's all POKE 65368 and above and it's sequential ABCD.... an…
... 32 (space) to 127 (copyright)) are referenced by the system variable CHARS ... the first byte of the space character, simplifying the formula ... 64519,85. Now every SPACE character will have a dotted ... letters for your variable names so that your BASIC program is ...how to load machine codeI'm reading Jon Caldwell's how to write Spectrum games but can't enter the code! Here's an example:_ LD BC, (score) Call 6683 I tried putting…
... - this contains the interpreter for BASIC, all the LOAD / SAVE ... (b) you can organise your variable data storage more efficiently, for ... instead of the five bytes BASIC uses.
... address space. In fact, when programming the Commodore 64 in BASIC ...how to load machine codeI'm reading Jon Caldwell's how to write Spectrum games but can't enter the code! Here's an example:_ LD BC, (score) Call 6683 I tried putting…
... - this contains the interpreter for BASIC, all the LOAD / SAVE ... (b) you can organise your variable data storage more efficiently, for ... instead of the five bytes BASIC uses.
... address space. In fact, when programming the Commodore 64 in BASIC ...ZX GameDev tools consolidatedHello WoS! It's been a while, yet with a plenty of decent gamedev tools (including new ones!), is there a [i]single/pivot table[/i] or some datash…
... sdcc is much improved), boriel basic, etc that allow you to ... they have [i]every single variable[/i] used in the game ... keep tabs on how much space that takes up and you ...Comp.Sys.Sinclair Crap Games Competition 2017As the creator of the second-least crap game in last year's competition (and the only mug stupid enough to agree to host it this year) I am proud/ash…
... /> This is the 'Sinclair BASIC Attribute Scroll Mechanism', or [b ... address 64000 there is space for 32 pre-defined ... . There's also space in memory for a ... of the UDG system variable at 23676 with either ... br /> 30 REM Sinclair BASIC Attribute Scroll Mechanism
"ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…
... a 6 × 5 array - the space for the top two rows ... with junk in 128/+3 BASIC. (It's annoying, because I ... the Spectrum's functions in BASIC, I've just made them ... it does not recognise the variable OT = ((s(1)+(PI/2 ...z80 Helper?When you are programming with z80 do you get 'lost' you are in the middle of making a routine and you can't remember which registers are holding val…
... -states whereas
Saving or loading one byte to ... ) and therefore each static variable takes memory that is never ... the same memory space in order to save space.
... />
The assembler will assign variable addresses as usual and the ...Why don't the variables print where I told them too?I wrote the following program to experiment with creating sounds using 3 notes of BEEP and having the ability to change the notes up or down one at a…
... of what it does and space saving is definitely essential given that ... and I taught my students basic programming skills and always emphasized ...Why don't the variables print where I told them too?I wrote the following program to experiment with creating sounds using 3 notes of BEEP and having the ability to change the notes up or down one at a…
... variable that the BASIC interpreter uses to keep track of how much space ... RAMTOP is still accessible to BASIC (using PEEK, POKE, USR etc ... purpose is to prevent a BASIC program from overwriting a machine ...Input command in 128K BASICHi, Is the input command different between 48K BASIC and 128K BASIC? I'm typing in a missing listing from the TypeFantasic and using 128K BASIC…
... would still not allow a variable called "data", but as the ... make the maximum space available for the BASIC the loader is installed ... br />
The loader uses BASIC lines 1 & 2. If ... it finishes (either "Nonsense in BASIC" or "Statement lost") but the ...New Platform Game: "Moritz 48K"Hello. There appeared a new platform game with my music. The game has been made by Sebastian Braunert and Uwe Geiken. Enjoy. "Moritz 48K…
... to some use. How does saving your friends sound ?"
space prison. Not really my thing ... again.
"It's basic Latin, Watson. Surely a man ... was required to have a basic appraisal of Latin in order ...
