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Bresenham's line algorithmHelp - I really am struggling to get my head around this algorithm. I don't know why, I coped with Cordic (SIN/COS) and integer divide routines (/10 …
... addresses and mask for plotting in one register set and line ... calculations in the other set. I would ... an 8-bit line pattern stored in the screen address set to ... way to plot lines of variable thickness :) -
VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…
... br />
; General purpose pointers, stored in zero page for indirect indexed ...
;Use charset in RAM
LDA #255
;Draw play area
LDA #$00
STA ... to point to colour nybble area
LDA #$00
... -
ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …
... The Music Box tune, stored in the screen area. With correct contended memory ... />
It's actually in the [URL="ftp://ftp.worldofspectrum ... ]. It certainly sounds awful in Spin with contention turned on ... a sound routine that runs in the bottom 16K without, ... -
I've been wondering...The Spectrum, CPC, and Apple II had no hardware sprites, so what were those 2D objects in their games?
... that the whole wall is stored in memory. Only one brick (or ... a small brick pattern) is stored in memory and repeated several times ... copy bytes to this memory area. There isn't any other ... will copy bytes to memory area. You must work harder to ... -
I've been wondering...The Spectrum, CPC, and Apple II had no hardware sprites, so what were those 2D objects in their games?
... that the whole wall is stored in memory. Only one brick (or ... a small brick pattern) is stored in memory and repeated several times ... copy bytes to this memory area. There isn't any other ... will copy bytes to memory area. You must work harder to ... -
Trouble compiling my BASIC programI've been trying to get a compiled BASIC version of Swift Turtle with no luck so far! I first tried MCoder 3 and it [i]seemed[/i] to compile the prog…
... out how to READ in multiple strings for a variable declared as a ... -
Trouble compiling my BASIC programI've been trying to get a compiled BASIC version of Swift Turtle with no luck so far! I first tried MCoder 3 and it [i]seemed[/i] to compile the prog…
... out how to READ in multiple strings for a variable declared as a ... -
Trouble compiling my BASIC programI've been trying to get a compiled BASIC version of Swift Turtle with no luck so far! I first tried MCoder 3 and it [i]seemed[/i] to compile the prog…
... out how to READ in multiple strings for a variable declared as a ... />
You can do it in exactly the way I described ... ]
It certainly works in Sinclair BASIC, although your mileage ... -
Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …
... MyStack ; Move stack to screen area
LD ... this once for each bit in faulty byte
< ... ;From 16-bit value stored in BC
LD A, ... /> QUICKPRINT
; Print character in 'A'
; at ROW=D ... part of the screen area where the program itself ... -
MultichromeIt turns out that multichrome, and other screen modes, are emulated in Fuse and Eightyone via ZX Spectrum SE emulation (which is similar to the TC214…
... where is the data physically stored in RAM. I'm rather hoping ... vram at 0x0000 and 0x2000 in banks 5 and 7. There ... transfer creates only multicolor effect in attribute area, but each frame must ... -
Simple text compressionI just checked one idea about text compression. Do not take it as recomendation but rather as info which can you save some time when you are solving …
... ] Each message is compressed and stored in a large block of bits ... a char 0 which is stored in the tree.
(on reflection ... )
; ------------------------------------------------
; API for reading strings from a Huffman Encoded String ... -
Best way to store vector images in Sinclair BASIC?Let's forget for a moment that Sinclair BASIC is slow. If I have a picture made entirely of vector images, what would be the best way to store that d…
Good idea Omega. Storage in a string will also save ... you could concatenate strings together.
Obviously, strings saved in a program ... entire copy into the VARS area (only a problem if space ... -
Ultimate! Time WasterThis used to bug me big time 25 years ago.:mad: In the early 16k releases of Ultimate Play the Game , Games Jetpac Cookie Trans am there are three …
... (If I remember correctly, System variable area POKEs). Maybe the ULTIMATE coders ... they will find three POKES in the BASIC loader... -
Ultimate! Time WasterThis used to bug me big time 25 years ago.:mad: In the early 16k releases of Ultimate Play the Game , Games Jetpac Cookie Trans am there are three …
... (If I remember correctly, System variable area POKEs). Maybe the ULTIMATE coders ... they will find three POKES in the BASIC loader...[/quote]
My first platformerHi all! How do you do? Been lurking here for a while, but never had the courage to join the forum. :) The Speccy was my first computer, so I've alw…
... the data needs to be stored). For example, can I ... located in the top left char of the 2x2 area and ... definitions, they need to be stored in columns. Each column most ... sp1_MoveSpr* plus the address specified in the sp1_CreateSpr / sp1_AddColSpr calls. ...'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…
... . Of course prints two times in the same position.
in main area
ld b,2
in the table
ld de ... about the use of the strings in the asm? Because this AT ...A tidy loader for minigamesThe minigame competition doesn't permit the use of separate loaders like [code]10 LOAD "": RAND USR 32768[/code] The loader must be included in the b…
... it appears before the string variable in memory. The address of the ... 23755 by default, but the variable doesn't have to be ... .5[/b], the six bytes stored in memory will be
[quote ...Hi Res Print Routine neededHas anyone seen code for a print routine with pixel accuracy? That is print(y,x,CHAR) that allows 0 < y < 192 and 0 < x < 255 - that takes a charact…
... all seems to chase in circles in the buffer area.
[/QUOTE]< ... character square is drawn is stored in the sp1_update_struct itself. This ... option to specify a smaller area to be managed by ... especially as each character in that area can be moved anyplace ...Seeking alternatives to DATA statementsAnyone know of any memory saving alternatives to storing a list of numbers, other than using DATA statements or poking data into addresses?... Im ti…
... the listing rather than stored in an unlisted variable... I like the hexidecimal ... that the numbers will be in range, as my script now ...Seeking alternatives to DATA statementsAnyone know of any memory saving alternatives to storing a list of numbers, other than using DATA statements or poking data into addresses?... Im ti…
... data before playing (the original in HEX, and the buffer ... problematic than if corrupted while in the speccy editor mode?...< ... br />
- The data is stored in strings of two bytes, just like ... HEX, perhaps stored in a REM statement (but DATA ...Location of variableHi everyone When basic makes an array how to you find out the location in the ram of where the data is stored. :) Also, does it store the values in…
... routine which searches the VARS area for a named string array ... type. Remember that numbers are stored in 5-byte form, so manipulating ... them directly from memory in BASIC is a bit tricky ... FIND A STRING ARRAY NAMED IN o$
3001 PRINT #0 ...ccompletly baffeled machine codeHi everyone, BEFORE you ask i have not asked help for loads of problems i have recently now encountered and i figured the problems out myself, hones…
... are stored in RAM, and are pointed to by the UDG System Variable ...Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…
... (i.e. variable [B]b[/B]) is temporarily stored in array [B]s ...Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…
... the integer version of the variable. We might be able to ... /> [/QUOTE]
Integers are stored in a different format to floats ... 'm surprised (though I suppose in actual fact I'm [i ...Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…
[QUOTE=Dunny;484009]Integers are stored in a different format to floats ... are all aware integers are stored in a different format and that ... needs patched to define a variable as an integer or not ...Alien8 will not run on Divide?I can't seem to get Alien8 running on my 128+ with Divide. I have the original tape and have loaded into an emulator to create a snapshot, (.z80) an…
... or the code is stored in the RAM area which will be paged ...Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…
... not see any reason in the book thought why ...
In Spectrum BASIC all variable names are converted and stored in lowercase. Because ... uppercase and lowercase names in a slightly different way. ... a very small difference in execution time makes sense.< ...Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…
... Saukas;486168]In Spectrum BASIC all variable names are converted and stored in lowercase ... processes uppercase and lowercase names in a slightly different way. Thus ... a very small difference in execution time makes sense.
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…
... BYTES) into the Spectrum screen area at 16384 and part two ... some of the data stored in the screen area but it shouldn't ... of the .SNA are stored in the screen area:
[URL=http ... system variables and BASIC program area.
EDIT:
