click me


handy bits

    Delete a file:
    OPEN1,8,15,"I":CLOSE1
    OPEN1,8,15,"S:FILENAME":CLOSE1
    
    Replace a file:
    SAVE "@0:FILENAME",8
    ---
    A$="FILENAME"
    SAVE "@0:" + A$, 8.
    
these should be made available when applicable as basic on handybits.d64 disks in the files section
bear with the cat we just trying to get the feel of the old machine back - its been ... longer than yo momma :)


maps n stuff

'2264 : https://kodiak64.com/blog/wild-wood-deconstructed
ADC : https://digitalerr0r.net/2011/03/21/commodore-64-programming-3-6502-arithmetics/ (mmh wel yea its gotta come from somewhere, now BEQ as a subroutine ? dazalni zeker?)


-https://www.c64-wiki.com/wiki/Graphics_Modes
-https://www.c64-wiki.com/wiki/Standard_Bitmap_Mode
-https://www.c64-wiki.com/wiki/Multicolor_Bitmap_Mode
for instance a slime or an orc graphic w as many color as possible using basic sounds already like math to barbie for now - 8 hires sprites + 1 background color + 1 character set (you need letters too) is missing bits of the palette - 8 lores sprites have to use the higher colors and multicol characters the lower so that could be 16 (i hope no ones reading im just thinking) since its basic to start dumping a 16color bitmap in the corner of the screen probably isnt an option - also i should be sleeping and its not 64day anyway
-
https://www.c64brain.com/graphics/commodore-64-sprites/
https://www.atarimagazines.com/compute/issue70/088_1_Loading_And_Linking_Commodore_Programs.php
https://www.cosmigo.com/promotion/docs/onlinehelp/gfxHardware-c64.htm#:~:text=The%20C64%20Multi%20Color%20Character,a%20size%20ratio%20of%202x1.
(https://vice-emu.pokefinder.org/index.php/VICEKB) keyboard map - - ... not compliant at all

https://retro64.altervista.org/blog/very-basic-basic-plotting-characters-screen-c64-and-vic-20/
or maybe its the emulator - it prints like nothing
its not ...
https://stackoverflow.com/questions/28597139/change-color-of-text-without-color-memory-in-c64-assembly

https://archive.org/details/1986-03-computegazette/page/n75/mode/2up (hardcore)
-
well : https://bumbershootsoft.wordpress.com/2020/11/09/building-a-faster-c64-bitmap-library/ - - even with rasterline interrupts just having 25% of the / 1/4th of the screen in pixelmode ... thats still 2500 and can you even split horizontally ?
https://www.lemon64.com/forum/viewtopic.php?t=52591&sid=e23377d250f6f209bbea51b22c5dc8f5
https://codebase64.org/doku.php?id=base:timerinterrupts
https://codebase64.org/doku.php?id=base:double_irq_explained
https://www.lemon64.com/forum/viewtopic.php?t=45328&start=15
https://www.c64-wiki.com/wiki/Interrupt
https://medium.com/developer-rants/interrupts-on-the-commodore-64-a-very-simple-example-cf1be764715e
https://www.c64-wiki.com/wiki/Raster_interrupt
http://www.c64os.com/post/commandandcontrol
http://www.c64os.com/post/rasterinterruptsplitscreen
https://books.google.be/books?id=UhpsEAAAQBAJ&pg=PT95&lpg=PT95&dq=c64+using+interrupts+combined+basic&source=bl&ots=rAvYksSF_A&sig=ACfU3U2ZoFZFDtAZv8uzxmwbF77qQncPuA&hl=nl&sa=X&ved=2ahUKEwj8nu6hua33AhVnhf0HHW36CTEQ6AF6BAghEAM#v=onepage&q=c64%20using%20interrupts%20combined%20basic&f=false
https://dustlayer.com/c64-coding-tutorials/2013/4/8/episode-2-3-did-i-interrupt-you
-
ye stuff while stuffing
-
https://codebase64.org/doku.php?id=base:demo_coding_introduction - but some colourcycling petsci probably comes first - ... NOP takes two cycles - screen gets drawn 50 times a second, theres 380 rasterlines - math is hard - im gonna have to learn to read again, i was hoping for youtube vids to put on while gaming ah ha
-
http://6502.org/ (it says "check out the list of opcodes" so they're probably there somewhere hahah) - - will sort while sorting when sorting
http://www.fairlight.to/tools/pc.html (!!!)
(https://vice-emu.pokefinder.org/index.php/VICEKB) keyboard map - - ... not compliant at all
-
https://ilesj.wordpress.com/2016/04/09/graphics-for-old-c64-colors-and-how-to-view-it/ (!!!)
-
https://www.c64-wiki.com/wiki/Screen_RAM
https://retro64.altervista.org/blog/very-basic-basic-plotting-characters-screen-c64-and-vic-20/
or maybe its the emulator - it prints like nothing
its not ...
-
https://www.lemon64.com/forum/viewtopic.php?t=23355
-

https://digitalerr0r.net/2011/05/01/commodore-64-programming-8-text-and-custom-charsets/
https://www.c64-wiki.com/wiki/Character_set#Programming

this is all oriented towards programming - basic as well as ML /asm