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To: Kashish King who wrote (46516)6/13/2000 9:45:00 AM
From: TigerPaw  Read Replies (1) | Respond to of 74651
 
A BASIC interpreter that went on to power the NASA
The NASA device was quite clever (and unclassified). The micoprocessor setup the device (reading keystrokes and setting up serial lines). Once the parameters were entered and stored the program would jump into a series of controlled loops which were mostly NOP TEST and JUMP, the timing was exact. Tied to the address lines were another series of ROMs which were coded with bit patterns which were issued as the microprocessor fetched each instruction. It was actually the output of these ROMs that controlled the device which was used to make radar maps of this and other planets. The heart of it was an interpreter inspired by BASIC. Can't talk about the other projects.
TP