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Tuesday, April 28, 2020
COSMACuino 0.1 going.
Now have ability to send programs to Mega which the 1802 "thinks" is ROM. Status information continuously sent to Bray term. Two "commands"used du=dump contents of virtual RAM to serial terminal, gf=get file, a .bin file from the a18 assembler. When a new file is received, the 1802 stops and resets and starts using new 1802 instructions just received.
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Think I've got it. On 1802 I/O is almost like DMA. For OUT 1 (0x61) the byte cycle after instruction fetch puts the address in R(x) ... -
Where we are at 23/3/2020 with 1802 project. Have 1802 hooked up to Arduino Mega2650 and running little programs that, for instance turn Q ... -
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