Users programmed the MicroAngelo in assembly language using the Z80's input/output parallel ports, which sent data over the internal S-100 bus at relatively high speeds. The original MA512 board included 32 kB of RAM for the frame buffer, a Z80 processor operating as a controller and memory refresh driver, and 4 kB of ROM containing one of two optional sets of subroutines. Early versions of AutoCAD supported the MicroAngelo system. The MicroAngelo Palette (or Colour Mixing) Card used the output of multiple MicroAngelo's as individual bit-planes to produce images with up to 256 colors (using 8 cards). Each MicroAngelo board produced a 512 by 480 pixel monochrome image, high resolution for the era. SCION's MicroAngelo was an early graphics card for S-100 bus computers. Not to be confused with Microangelo Toolset.
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