Harold Hallikainen wrote:

> Walter,
>
> THANKS for posting the brief history of Byte Craft! It's fun looking back.
> I see that one of your early compilers was for the Motorola 6805. The 6805
> was the first microcontroller I worked with. Prior to that, I had used the
> MC6802, all in assembly, either using the assembler on a timeshare service
> called The Source, or, later, using an assembler on my Cromemco CP/M
> system. I also did 6805 code in assembly using the Cromemco. Fun stuff!
> Debugging was largely staring at code. I also used the "crash and burn"
> debugging technique, where my program would crash, I'd try to fix it, and
> burn another eprom. For the 6802, I had written a monitor program that let
> me look at memory, start execution at some point, and set breakpoints
> (using the 6800 SWI instruction (0x3f)). When we hit an SWI instruction,
> the monitor would dump the registers to my terminal (a Lear Siegler ADM-1)
> and wait for further instructions.
>
> Stuff is a little different today writing in C and using the Real ICE.
>
> Harold

Lunch time discussion today was all the bad things that would happen
when a 2708 was plugged in backwards. We dug out the parts from
the ADAM project.  Including Serial number 2. A data logger
system with a cmos automotive 6805 whose code was written
in Mistral optimized for power consumption.

Remembered Gerry Wheeler the originator of the HCF (Halt and Catch
Fire) moniker for the 6800 op code DD and D9.

Lots of old memories.

Walter..


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