21 Feb
2018
21 Feb
'18
9:44 a.m.
On Wed, Feb 21, 2018 at 10:19 AM, Ray Arachelian via cctalk <
cctalk at classiccmp.org> wrote:
On 02/19/18 19:36, Adrian Stoness via cctalk wrote:
Ray, you've provided a few really excellent messages here.
[snip]
whats invovled in makin an emulator?
i have a chunk of stuff for the phillips p1000
Quite a lot actually. A single CPU system is difficult enough, but a
mainframe might be much, much harder. The idea to use an existing
emulator framework, such as SIMH, is a great one.
Are you planning on emulating the whole machine, or
just the userland?
Might be easier to create a simulation of the OS in software on the host
side the way that Executor did with MacOS - Cliff implemented his own
version of MacOS 7.x, enough to be able to run most applications of that
era, but not all. see: https://github.com/ctm/executor.git and
https://github.com/ctm/executor.git - some of this is called "High Level
Emulation" and is sort of what WINE does (though wine isn't an emulator).
You put the same URL in twice there; did you intend for another URL?
I was quite a fan of Executor. It's cool to see that it's open source now.
Be careful
as there's a lot of "emu scene" folks out there with tons of free time,
more than you might have, who will happily promise to help, but instead
take your documentation, firmware, OS images, etc. and compete with you
behind your back just to get there first, instead of actually helping
you with your project. On this latter point, I sadly speak from
experience.
Wow, I didn't know about that. Good to know.
--
Eric Christopherson