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pic pic Hi-Res Astrocade
By Michael Matte (Circa Mid-1980s)
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More information about Michael Matte's high resolution Astrocade can be found here:

  1. Description of Hi-Res Astrocade Tour

Michael continues to work on this project as of August 2018. Here are the plans that he sent along with ten of the pictures below.

  1. Michael Matte's August 2018 Hi-Res Astrocade Plans

Michael has written brief descriptions for each picture of his high-res Astrocade. These descriptions are next to the picture below. Michael has written a "tour" that provides detailed information on MCM Design's low/hi-res Astrocade for anyone desiring to take the challenge and build such an Astrocade. The details may help provide ideas for creation of someone's own version of a hi-res Astrocade.

  1. Michael Matte's August 2018 Hi-Res Astrocade "Tour"
Hi-Res Astrocade 002_tn Michael's Hi-Res Astrocade System - Picture 0
By Michael Matte.
September 2017.

MCM Design's low/hi-res Astrocade is mounted on top of a (previously empty) Viper 1 cabinet. The Astrocade has an interface for a full-size QWERTY matrix keyboard and a connector for a custom 24 button keypad.
  1. Description of Hi-Res Astrocade Tour
High-Res Astrocade_01_tn Michael's Hi-Res Astrocade System - Picture 1

Front view shows 24-pin wire-wrapped socket mounted on modified motherboard for ribbon cable connection to the low/hi-res screen RAM interface inside the Viper cabinet.

High-Res Astrocade_02_tn Michael's Hi-Res Astrocade System - Picture 2

Top view of custom audio/video board providing 2 audio outputs and composite video output. Remote keypad connector is also visible on the left.

High-Res Astrocade_03_tn Michael's Hi-Res Astrocade System - Picture 3

View of Astrocade and ROM/RAM board assembly, hinged to back of Viper cabinet, when swung up and back.

High-Res Astrocade_04_tn Michael's Hi-Res Astrocade System - Picture 4

Front view of ROM/RAM board showing 24-pin ribbon cable on top and 50-pin ribbon cable on the bottom.

High-Res Astrocade_05_tn Michael's Hi-Res Astrocade System - Picture 5

Closer front view showing four 4KB screen RAM banks on the right, 2 static user RAM chips, one 8KB hi-res ROM chip and all the necessary interfacing chips.

High-Res Astrocade_06_tn Michael's Hi-Res Astrocade System - Picture 6

Viper cabinet interior showing exposed Astrocade pwr xfmr, ROM/RAM board pwr xfmr, +5V,+12V,-5VDC power supply board and forced air cooling fan for Astrocade motherboard.

High-Res Astrocade_07_tn Michael's Hi-Res Astrocade System - Picture 7

Top view of modified motherboard with audio/video board and remote keypad connector.

High-Res Astrocade_08_tn Michael's Hi-Res Astrocade System - Picture 8

Closer view of motherboard showing 6 blue custom chip address lines MA0-MA5 from top of motherboard to 24pin ribbon cable socket. Low-res RAM chips are removed.

High-Res Astrocade_09_tn Michael's Hi-Res Astrocade System - Picture 9

Bottom view of motherboard showing 17 necessary connections from motherboard to RC socket. See Tour Description doc for details.

High-Res Astrocade_10_tn Michael's Hi-Res Astrocade System - Picture 10

Top view of new upcoming BalCheckHR board shows 5 TTL (or compatible) chips with multicarted 32KB EEPROM. Solder contacts for remote power supply are underside.

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