In 1979 the University of Tennessee/Knoxville's Computer Science Department released Felix v2.1 for CP/M, which is available on the Walnut Creek CD. It aimed to provide a basis for computer animation experiments and projects for education and hobbyist use.
The system used an early graphics card for S-100 bus computers called the Cromemco Dazzler to display the animations on a television screen. The Dazzler was released in 1976 and could display a maximum resolution of 128x128 in monochrome or 64x64 using 8 colours with or without intensity.
Felix uses a VM to display and control the animations with the hope of creating a portable animation system across computing platforms. The animations are created in a form of assembly language targeted at the Felix VM which is assembled using the
FASM command to produce a
.FEX file which is then run using the
An example file called
BEE.FAS is included in the archive and listed below:
; 8 SEPT 79 - MOSHELL ; ; BLOOMING FLOWER; BEE LANDS,FLIES AGAIN.BIRD ; COMES ALONG AND EATS BEE. ; SPEED EQU 0 GROUND EQU 0 STEM EQU 1 LEFTPETAL EQU 2 RIGHTPETAL EQU 3 BEE EQU 4 BEEPATH EQU 5 B2PATH EQU 6 BIRD EQU 7 BIRDPATH EQU 8 ; DELAY SPEED ONLIST 2,STEM,GROUND MOVE 15,.COUNT ; ;FIRST THE PLANT GROWS AND BLOSSOMS. ; STEMLOOP: FLY STEM,0,1 SHOW SUB .COUNT,1,.COUNT JNZ STEMLOOP ; BACKGRND STEM ONLIST 4,LEFTPETAL,RIGHTPETAL,STEM,GROUND MOVE 5,.COUNT DELAY 150 ; PETALOOP:BACKGRND LEFTPETAL BACKGRND RIGHTPETAL SPIN LEFTPETAL,-1 SPIN RIGHTPETAL,1 SHOW SUB .COUNT,1,.COUNT JNZ PETALOOP ; CALL PAUSE ONLIST 1,BEE ; ;NOW A BEE WANDERS ACROSS THE SCENE,SETTLES ON FLOWER. ; BEELOOP:PATH BEE,BEEPATH SHOW JNZ BEELOOP ; CALL PAUSE ONLIST 2,BEE,BIRD ; ;NOW THE BEE LEAVES THE FLOWER,MEETS BIRD. ; B2LOOP: PATH BIRD,BIRDPATH PATH BEE,B2PATH SHOW JNZ B2LOOP ; ONLIST 1,BIRD ;BEE DONE BEEN ET. ; ; BIRD NOW FLIES AROUND THE SCREEN FOREVER. ; BIRDLOOP:PATH BIRD,BIRDPATH SHOW JUMP BIRDLOOP ; ;- - - - - - - - - - - - - - - - - - - - - ; PAUSE: DELAY 250 MOVE 5,.COUNT PLOOP: SUB .COUNT,1,.COUNT JNZ PLOOP DELAY SPEED RETURN ; COUNT: DB 0 ; END
You can see a couple of animations using Felix in the following video. It demonstrates Felix using z80pack to emulate an IMSAI 8080 with a Dazzler, running CP/M 2.2. Unfortunately, I'm not able to fully test Felix because the emulator doesn't emulate the required analog-to-digital converter to use the joysticks. However, it was fun to play with and I think it's nice to see the system in action.