On 11/01/2012 01:15 PM, ben wrote:
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.
Your still getting a Z180. ;)
I considered it bout I have enough Machine that do all that already.
Though my favorites are my Kaypro4/84 and AmproLB+.
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
There are no shortage of small, mid and full out ARM based systems.
Many of them under 100$. Also ARM is RISC, though 150mhz and modest
you are looking for maybe a A7 core. As to non linux Raspberry PI I
run "other". Me I find a ARM core with enough ram, flash and a microSD
to be utility system running a small linux as a convenient starting
point to self
compile any project.
I still want to play with classic computers, not on
As I find out more about the older machines, it seems the way things
is you time shared on a BIG computer (360/Vax/PDP-10) in Fortran, and
on paper tape for all the other (small) computers.
I tired of paper tape fast and did my dead level best to avoid 029 and
My idea of all of that was a PDP10 or VAX running Tops10 or VMS, I have
the latter operational. Long time timeshare user on big (and smaller) iron.
If I need real clank and bang I have a few PDP-11s with RX02 and RL02
and other OSs. Same for an PDP-8f
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
A bios will hide the 6850 Acia, and IDE interface. I plan to emulate
then later build the hardware on 4 PCB's. ALU,Control, Front panel and
memory,EEprom, 6850. Remaining memory and IDE interface on other board.
2901 is not well suited to 18bit as a 4 bit slice but it can be done.
Did a lot with
2900 and still have a bunch of the 2901Cs. Consider a wider microword
as it does make the encoding easier and helps with speed too.
For drives I tend to go more to SD or CF as gets rid of a host of
and noise. Moving head drives are getting to be a PITA to interface as SATA
is the norm and older IDE more scarce. I keep a pile of older stuff because
but still I try to build around current material even if its emulating