Rockwell - AIM  Rockwell AIM 65
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Rockwell AIM-65

The Rockwell AIM-65 was a development computer b ased on the MOS 6502 microprocessor. It was basically an expanded KIM-1 computer. Software available for this machine included a BASIC interpreter, Assembler, Pascal, PL/65 and FORTH. The computer had an integrated 20 character thermal printer

The machine had a dual cassette tape controller which enabled it to create very large assembly programs using a two-pass assembler that was built in ROM. Source code text was written twice to the input tape, and to the assembler. The assembler could start and stop the input tape using the motor control relaix. During the first pass, a symbol table was built and stored into RAM. During the second pass, symbols would be translated and the code would be written to the second tape unit, also using the start/stop control. This avoided having to store the actual code in RAM, and all RAM could be used solely for the symbol table, saving space. Of course, with the little RAM this system had, the list of symbols needed to be kept short.

In Spain, the Comelta company produced the computer. Comelta used a different case, and called it the Comelta Drac-1, but still under the Rockwell brand name.

Various expansion cards were made by Comelta:

  • CR-106 - 8KByte of RAM
  • CR-113 - Video Controller
  • CR-115 - Microcassette controller
  • CR-119 - RAM/ROM/PROM expansion card
  • CR-120 - Universal programming card
  • CR-401 - Board Bus Extension(S-64 Standard)

The Cromelta-1

By Miguel Durán, CC BY-SA 2.5, Link

The Cromelta-1 Expansion Box

By Miguel Durán, CC BY-SA 2.5, Link

Rockwell AIM-65 Inside

CC BY-SA 3.0, Link

By Rockwell CPU Rockwell 6502 @1MHz Memory 4KB RAM Sound none Sprites none Display 20 character alphanumeric LED display (16 segments) Display Chip none Sound Chip none CPU Class 6502 Developed by Rockwell
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Rockwell AIM  65
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