Search found 7 matches

by EvilSnack
Sat Sep 24, 2022 10:48 pm
Forum:
Topic: BASIC 2? Why not get BASIC 7?
Replies: 175
Views: 79303

BASIC 2? Why not get BASIC 7?

I started learning Commodore BASIC in 1980 (on the PET), and got 6502 programming docs the moment I could lay my hands on them. Remembering back to those days, I now have the idea of developing a transpiler (or whatever you want to call it) which: * Looks and runs like CBASIC, or, should I say, how...
by EvilSnack
Wed Dec 01, 2021 9:20 pm
Forum:
Topic: Does this seem eggregious to anyone besides me?
Replies: 44
Views: 9001

Does this seem eggregious to anyone besides me?


My algorithm was more general-purpose, not assuming any particular length of the dividend.

The reason it works is because the series (1/16) + (1/16)^2 + (1/16)^3 + ... approaches 1/15, and then it's only a matter of dividing by 4 to get the final result.

 

by EvilSnack
Sat Nov 27, 2021 2:07 am
Forum:
Topic: Does this seem eggregious to anyone besides me?
Replies: 44
Views: 9001

Does this seem eggregious to anyone besides me?

<blockquote class="ipsQuote" data-ipsquote="" data-ipsquote-contentapp="forums" data-ipsquote-contentclass="forums_Topic" data-ipsquote-contentcommentid="16040" data-ipsquote-contentid="2015" data-ipsquote-contenttype="forums" data-ipsquote-timestamp="1637962919" data-ipsquote-userid="2904" data-ips...
by EvilSnack
Fri Nov 26, 2021 9:41 pm
Forum:
Topic: Does this seem eggregious to anyone besides me?
Replies: 44
Views: 9001

Does this seem eggregious to anyone besides me?

One way to divide any integer by 60, using only integer math: 1. Shift right by six bits. Save off this value. 2. Shift right by another four bits. Add this to the variable holding the saved-off value. 3. If you still have anything left in the shift variable, return to step 2. 4. The variable with ...
by EvilSnack
Fri Nov 26, 2021 9:18 pm
Forum:
Topic: 6809 instead of the 6502
Replies: 51
Views: 18422

6809 instead of the 6502


I understand the reasons why few would attempt this. The 6809 seems to have been a victim of bad timing. I've coded for both the 6502 (including a word processor for my C64) and the 6809 (several attempted games for Dad's CoCo), and the latter simply had that much more potential.

by EvilSnack
Wed Oct 27, 2021 7:03 pm
Forum:
Topic: 6809 instead of the 6502
Replies: 51
Views: 18422

6809 instead of the 6502


Aside from having to rewrite the entire ROM, and perhaps having to add an adapter to accommodate any pin-out/power requirement variation between the two CPUs, what's stopping an ambitious experimenter from replacing the 6502 with a 6809?

 

by EvilSnack
Wed Oct 27, 2021 6:50 pm
Forum: CX16 General Chat
Topic: Howdy from Houston
Replies: 1
Views: 725

Howdy from Houston

I wrote my very first computer program on a Commodore Pet in January of 1980. I was in ninth grade on my lunch break, and went over, making me late for civics class. Briefly migrated into TRS-80 Color Computer land during high school, but got my Commodore 64 from a Sears in San Antonio in 1984. Mig...