23 May
2020
23 May
'20
7:40 p.m.
On 5/23/2020 6:47 PM, Chris Hanson wrote:
On May 23, 2020, at 7:54 AM, Jay Jaeger <cube1 at
charter.net> wrote:
I think it depends on whether you want to expose *Ethernet* to the device you?re
implementing, or just to provide access to it *over* Ethernet. Exposing serial and other
channels via SPI or I2C is certainly straightforward.
Actually, neither, really. This is an ollllllllllllld mainframe I am
implementing. I will be exposing the lamps and switches (machine state
vector), a selectric console typewriter I/O and 7 track tape drives, and
maybe, eventually, a tiny (10MB) random access device. SPI or I2C
to/from a microcontroller (PIC, Arduino, whatever) will do the trick
nicely - it can then talk TCP to the PC for data for the tapes and disk.
JRJ