Retro Ultra Replica
The main goal is to enhance our detailed understanding of computer systems’ functions, but, above all, to evoke and recreate the atmosphere of the amazing period between 1973 and 1979 when people had the opportunity to encounter the first versions of personal computers.
RUR_HW
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Intel 8085 processor
https://en.m.wikipedia.org/wiki/Intel_8085
https://www.wikiwand.com/en/Intel_8085
https://usemynotes.com/what-is-8085-microprocessor/
https://heavydeck.net/project/i8085-microcomputer/
Instruction table: https://pmd85.borik.net/instrset/instuction-set.html
opcode: http://www.emulator101.com/reference/8080-by-opcode.html
Monitor ver. 1.2
> ? A ON|OFF - Enable/Disable Automatic register display B [bp address] - Set/Display breakpoints C <src> <dest> <size> - Copy memory D <address> - Display memory in assembly format E <address> - Edit memory F <start> <end> <value> - Fill memory G [address] - Begin/Resume execution H <start> <end> - Send out memory in Intel HEX format I <port> - Input from port L [address] - Load image into memory M <address> - Display memory in hex dump format O <port> <data> - Output to port R [rp value] - Set/Display program registers S ON|OFF - Enable/Disable Subroutine trace T ON|OFF - Enable/Disable Trace mode U [address] - Set/Display program base address
Memory mapping
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EPROM:
monitor 0000 - 0fde
blink 0fdf - 0fff (delay: call 0ff2)
boot1 1000 -
boot2 todo: read "intelhex"
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BASIC 1800 - 399f
... 39a0 ?
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RAM:
62256 (32k) 8000 - ffff
FFA0 ; Debugger RAM (Monitor)
6264 (8k) A000 x
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