Bernard
When I was student in 1979 my solar project need to drive a equatorial parabola.
I decided to use IM6100 and test application program with an Intercept Junior and TTY.
In 2018, During dismantling cubicle in a room, I found old boards with IM6100.
My idea was to retro build a Intercept Jr like board with CPU and other chips.
After drawing schematic on Eagle, I weld about 900 wires on double side universal board.
To load program code in EEPROM memory I use Microduino board ATMEGA 1244. `
For access, DMA pin is activate to allowed Microduino loading 12 bits CPU codes.
Recently I found Smal8.c source file of PAL III Pdp8 assembler. I adapt application for the board compile and use with Sublimetext3 build menu. perfect !
So I decide to test RS232 connection and I2C line to drive LCD 20x4.
Discussions
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Hi Robert,
I was just inspired by some part of the program to make the subroutine calls and manage the stack.
Here is the manual used.
https://www.jkearney.com/sbc6120/Intercept_Jr._Manual.pdf
and
https://www.hb9aik.ch/computer/AN%20M008.pdf
I had adapt to my HW.
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Nice job! Where did you find the code or ROM images for the Intercept Jr monitor program?
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