Denial

Thanks Mike, just going to do the next lesson.

Ohhhh... Der

So, I got as far as ballping Mike. Understood the code and typed it into vicmon, faithfully (I think). [...] When I ran it, the screen colour changed, the beeps started, but no ball! So I copied it off, loaded it into vice and ran it... voila it worked. Copied it from the pc back to my .d64 and it w...

I just did this first lesson on real hardware, thx Mike!


Do or do not there is no try

but this attempt at an implementation does not honour in any way that the 65xx is an 8-bit-CPU and only can handle data 8 bits at a time. - Apart from that all good though, yeah? :lol: I have learned from your VICMON tutorial, this is a case of trying to run before you can crawl, as you can tell. T...

Hi all, This questions relates to an unexpanded VIC 20. My first (probably too ambitious) assembly project is to try and recreate a lunar module display and keyboard from the 1960s. I need to be able to light up several areas of the screen (2x4 characters) based on whether a memory location contains...

Thanks for the tips. I will be doing i/o on the user port eventually, so all relevant.

Hi all, In my first project when I want the program to end, I reset the screen colours to standard, clear the screen and point the customer character set back to the standard ROM characters. Is there a best practice around termination and "garbage collection"? For example my instinct is to...

Hey mythic,

Nice to know I'm not the only newbie out here - although, you're coming from the x86 asm world. Good luck with your project!

Martin

Hello, I'm starting with the DSKY...

Hi Thegg, Progress at last! Screenshot 2022-11-22 165701.png Not all of the characters I needed were in the first 64, so after a bit of rearranging^^^ Need to tidy up the design of the characters, but I feel like I am moving forward now. I don't know if it's a CBM Prg Studio bug - but the colour dat...

Hey all, Thanks for the kind replies. I've taken on board what was suggested and ended up with: ; 10 SYS (5120) *=$1001 BYTE $0E, $10, $0A, $00, $9E, $20, $28, $35, $31, $32, $30, $29, $00, $00, $00 SCRN=$1e00 COLOUR=$9600 CMAP=$1010 SMAP=$120A SCRMAP incbin "DSKY1.sdd",1,1 *=$1400 jsr def...

Thanks Thegg - what's the difference with the code sample you gave me? Tried it and same results. Setting the redefined char set aside and commenting that out, I get the result below. The top row looks as expected, it all goes wrong after that. Screenshot 2022-11-20 151323.png I'll look again at Mik...

Thank you both for your replies. I'm using CBM PRG Studio v4's assembler and tools. I have generated a customer char set and screen in the designers and saved them off to binary files in the project folder. Then I have the following code, cobbled together from watching YouTube and reading (I am a to...

I'll have a rethink and try an approach without x and y registers