Josip Retro Bits @josipretrobits@qoto.org

"Fedora" plot...
(I converted to BBC BASIC from Atari 8 bit listing on AtariAge forum)

1 MODE 0
2 VDU 19,1,1,0,0,0
3 DIM RR(320)
4 FOR I=0 TO 320:RR(I)=193:NEXT I
5 XP=144:XR=4.71238905:XF=XR/XP
6 FOR ZI=64 TO -64 STEP -.5
7 ZT=ZI*2.25:ZS=ZT*ZT
8 XL=INT(SQR(20736-ZS)+0.5)
9 FOR XI=0-XL TO XL STEP.5
10 XT=SQR(XI*XI+ZS)*XF
11 YY=(SIN(XT)+SIN(XT*3)*0.4)*56
12 X1=XI+ZI+160:Y1=90-YY+ZI
13 IF RR(X1)<=Y1 THEN 16
14 RR(X1)=Y1
15 PLOT 69, X1*4,800-Y1*4
16 NEXT XI:NEXT ZI

I ran @rheolism's program and got this.

This is AWESOME! Portal! Yes, PORTAL! On the PET!!!!!! And it's fantastic!!

Alone in the Dark: A Complete Retrospective and Analysis - Jwlar
https://youtu.be/L5hwt-BdSd4

Super Star Trek, which I have converted from the original 1970s (80 column printer terminal) source code. Now for the #Commodorer64 with some sympathetic enhancements such as NAVigation and TORpedo helpers. It's not perfect, but getting there. Still deliberately terminal based!

Introducing the first alpha release of Mastodon 3.11 for Workgroups!

Available for Windows 95

It's funny. It's only now that I've made a .gif of the old Boing Ball demo, and I see it before it animates, that I realize exactly how they did it. There's no animation of the ball. Just colour-cycle it, and let the Amiga's hardware move it around. Genius. 🤓

PSA from @retrotechtive https://www.youtube.com/watch?v=ByHdBD16DRg

Not sure why it never occurred to me to try my favorite retro demo program on an 80 column PET. Universe wrong now righted. Happy Wednesday! #commodore #PET #retrocomputing

Something is in the pipes and it brought me back to the lovely big blue for a little bit. Stay tuned! #Commodore64

Refurbishing the C64C
https://youtu.be/bRDIzKXgyUM
#commodore #c64

Stolen from 8 Bit YTP Productions on YT. Also a bit late for those of us in the Antipodes.