COMMENT ⊗   VALID 00002 PAGES
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C00001 00001
C00002 00002		SPECS FOR MICROPROCESSOR SYSTEM FOR REM
C00007 ENDMK
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	SPECS FOR MICROPROCESSOR SYSTEM FOR REM
	Munged by LCS, May 19
	This edition, 1977.May.12 13 PDT

HARDWARE SPECS:
	Cabinet: black-box with power-cord, two RS-232 sockets,	on/off
		switch, reset and interupt push buttons.

	Power supply: 117 volts 60 Hertz input. +5 (-12 maybe) output.
		(It might not be worth the bucks for a big supply until
		you accualy add the extras).

	CPU board: CPU, power fail/start, bus buffers, EPROM (2*256*8 ∨ 1k*8).

	Memory (RAM) board: 4k*8 bufferd and decoded.

	I/O board: 2 RS-232 ports, 4 or 8 chanel programable bit-rate generator.

	I/O extra: room in box for 3 spare IObus cards added later if you want to
	include cassette, Holofile, auto-dial-auto-answer controllers interfaces
	whatever.    


SOFTWARE:
	PROM  already  programmed  with  rudimentary  octal or
hexidecimal debugger like  ddt,  with  all  of  the  following
working:  1)  Type  in  number  to specify address 2) Type out
contents 3) Type in contents  to  replace  old  data  4)  Step
foreward in memory addressing space 5) Step backward similar
6) Jump indirect (or similar) through some location to start program.
	This debugger would  work  from  the  first RS-232 port.

	RESET-START or whatever (reset button) on physical control
panel would restart DDT.

	Saving PC etc. on stack followed by start ddt would
happen when either of these two conditions happend: (a) special
instruction executed (b) special physical interrupt button on console pressed.

DOCUMENTATION:
	Prints for all circuitry (not necessarily formal high
quality professional prints, just copies of what you used
to design it so I can figure out how it's all put together).
  Listings  of  all  software
provided.  Instructions  for  how  to avoid burning out things
(like how to power-down before pulling or inserting a card).

END.