When are VGA cards not EGA compatible – testing with Fantasyland #VintageComputing #Retrocomputing
In 1984, Joel Gould of IBM Cambridge (Massachusetts) Scientific Center wrote a demo program named FantasyLand. This demo was meant to show off the capabilities of IBM’s brand new Enhanced Graphics Adapter, or EGA. The demo was strictly a demo and was never sold.
Michal Necasek has attempted to run the FantasyLand demo on a number of VGA cards and in the end concluded that it cannot run properly. Even though the VGA is in general highly backwards compatible with the EGA, the FantasyLand demo exposes a couple of minor points where that’s not the case.
See an analysis of the tiny but important differences between EGA and VGA emulating EGA and one possible success in the blog post here.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.