1 Nov
2012
1 Nov
'12
10:15 a.m.
On 11/1/2012 4:07 AM, allison wrote:
Using a Z80 (P112 is Z180 , but the core is still z80) 8bitter
regardless of speed
will emulate a lot of stuff... S..L..O..W..L..Y.....!
No, I want the P112 for 8080 and cp/m. Fig Forth, Small C, Adventure ... .
I still need a floppy, power supply , cables and formatted media.
That I can get later. Since I have to pre-order from web site, I'll order
around the 9th. I still am waiting for a few bills to come in.
Is that what you want or are you thinking 32bit A9 ARM
core at 400mhz??
No, just a generic Risc & 150 Mhz. A quick on the web, seems to
give
small one chip clones, or full sized linux systems for single board
computers.
Allison
I still want to play with classic computers, not on windows/linux machine.
As I find out more about the older machines, it seems the way things worked,
is you time shared on a BIG computer (360/Vax/PDP-10) in Fortran, and
punched
on paper tape for all the other (small) computers.
Right now my big hardware/software/vaporware project is 18 bit computer,
using a 2901 engine with a 400 ns clock and my own instruction set.
This will give a 1.2 us memory cycle - 600 ns access time. Micro-code is
256 x 16, giving the feel of mid 1970's general purpose computer with
Front panel ,16 Kw core memory, Serial I/O and small hard drive (moving
head).
A bios will hide the 6850 Acia, and IDE interface. I plan to emulate
for now
then later build the hardware on 4 PCB's. ALU,Control, Front panel and Basic
memory,EEprom, 6850. Remaining memory and IDE interface on other board.
Ben.