Graphics / Video Card PAL RGB converter + Parallel interface Homebrew computer?

Vintage Generic Game Port/Parallel 8-Bit ISA Interface Card

Cardco Centronics Parallel Printer Interface for VIC-20 & C-64 UNTESTED

Vintage 1980s Atari 850 Interface Module, RS-232, Centronic Parallel FOR PARTS

Atari MPP-1100 Parallel Printer Interface by Microbits Peripheral Products

Cardco Centronics Parallel Printer Interface +Graphics Commodore

Apple Super Serial Card Grappler+ Printer Interface Cable Orange Micro A2B0044

Apricorn Printerpro Parallel Printer Interface for the Apple ][e ( IIe / //e )