Denial

Can this be used for practicing assembler on a real VIC 20? :D Yes, but you must not use a memory extension. You can enter your code directly into the VIC20 and test it immediately (F1 key). However, you should definitely watch the corresponding video first. Let me know how well you get on with the...

I've uploaded vers. 1.1. changes: 138 bytes more memory for code ($18a7 to $1dff = 1368 bytes) in disk version minor bug fixes an extra tape version with the possibility to write code starting at address $1973 or further back. (included as .tap and .wav file) funfact: 1973 is my year of birth :D (bu...

Thanks Mike & tlr for your help.

I've tried tlr's .prg-file and it works well.
good job!

I bought an R36S handheld and I'm happy with it so far. But the VIC20 emulator seems to have problems when a program tries to load additional data from .TAP files. My favorite game from my youth was Skramble! by R.W. Stevens (Terminal Software) , I can only find it as a .TAP file and it loads additi...

Is it a monitor or an assembler? I don't know but I call it an assembler. TINYASM is an assembler for the unexpanded VIC20, which can be loaded directly from disk without a module or memory expansion. It's my assembly project from 2024. I think, it's good enought now for the first release. The whole...

Title : TinyASM Platform : Commodore Unexpanded VIC-20 Media : .D64 / .prg file Video : PAL/NTSC Software type : Assembler / code editor Written by : Henner Kessler Release date : January 2025 Language used : Assembler https://youtu.be/D-vyuzpaASA Description : TINYASM is probably more of a code ed...

Title : Jumpin'Claus Platform : Commodore Unexpanded VIC-20 Media : .D64 / .prg file Video : PAL/NTSC Interface : Joystick Software type : Jump'n Run Written by : Henner Kessler Release date : December 2023 Language used : 100% BASIC v.2 In keeping with the start of the Christmas season, I would li...

if I am correctly informed, you can store own code on the stack from address $0140 upwards. How do you decide how much memory can be forked off the stack for your own code? In my current project I have 77 bytes on the stack and I have no idea whether this is okay :roll: What is your procedure for de...

here is the .prg file of the programm. after switching between up and down the $975-routine starts with scrolling 2 lines and continues with 1 line. but i don't think there is a chance to affect the kernal. i always try to save bytes by using kernal routines but in this case it seems that i have to ...

yep, i understand that for the basic start screen or basic lines. but here is an example code (i'm afraid i've mixed up 'up' and 'down'): *=$1001 !byte $0b,$08, $00,$00, $9e, $34, $36, $30, $30, $00,$00, $00 SCROLL_DOWN = $e975 SCROLL_UP = $ea08 *=$11f8 ; some initial things lda #9 sta $900f ldy #21...

after a long break i have started a new vic20 project and immediately i run into the first problems :roll: The scroll routine $e975 (59765 in basic) always scrolls two lines the first time it is called. On the next calls, it scrolls single lines as it should do. I have not yet found out when two lin...

Hi Mike, thanks for your help. ... I'm sorry, but this is really basic (in the actual sense of fundamental, not the language's name errorneously written in lower case) knowledge when you go about redefining characters! ... I'm also sorry about my fundamental knowledge basic gaps but that is the reas...

for a basic project i move the character memory to $1c00 and place my 8 custom character directly behind the screen (7680 - 64). the basic code can have all bytes before my 8 characters. for a while the programm runs ok but after a while my characters are changing step by step. there is no POKE comm...

all these games are fantastic.
Simple gameplay with lot of fun.

I like the light effects in the oil game grafics and look forward to see more games in future.

Unexpanded rocks

oh, nice!
but i didn't understand what they were saying.