On 3/9/2018 6:24 PM, Patrick wrote:
I found a cross compiler, pre-compiled for 64bit Linux.
I just need to figure out the best way to network between dos and
linux to transfer the executable.
FreeDos starts so fast I might try transferring to a qemu image via an
iso image. Preparing an image will take a bit of time but less time
than the boot up.
Well, to "boot DOS", all it takes is in general 5 or 6 files to get
loaded (including config.sys and autoexec.bat, two tiny text files).
I am missing my router power supply, once I find it I will also have
network access for a FreeDos laptop I set up.
Thanks for the SBC link Eric, I will look at these in detail. The list
didn't mention PC104. I am going to see if this is a viable option too
and thanks for the MODE tip, I am now at 132 col 50 lines
PC/104 is a form factor and system bus standard. Those are not "PC"s, as
in "(IBM) Personal Computer". Most of them lack the BIOS, on which DOS
relies on to do a lot of its communication with the hardware, by calling
various function via BIOS interrupt calls, like INT10h for video, INT13h
for disk I/O, INT16h for keyboard, INT15h for various system services
and a few more.
And those boards that include a BIOS, certainly don't fall into the
"inexpensive" category. Beside that there are also PC/104 boards that
don't even have x86 CPUs, but ARM or PowerPC...
Guys, I am a little worried about "a world of hurt" with dos
programming :)
It's just that this is on standards/levels from +20 years ago. And lot
of stuff works differently on DOS than on OS more en vogue today. No
threading as already mentioned, no virtual memory, thus restrictions on
the amount of RAM available for your application, just to name a few
issues people nowadays, that where never exposed to working on DOS
before, commonly seem to get a "bloody nose"... ;-)
Do these seem like good books to catch up? :
The Peter Norton programmer's guide to the IBM PC
and
Advanced Ms-DOS Programming
Those are certainly a good start.
Ralf mentioned "yes, no, maybe" when responding to my assertion that
old computers are unreliable due to a cut throat industry that has
short term quality goals.
These days I am mostly doing circuit board repairs but I have also
sold a lot of scientific instruments over the years. I have setup lots
of used computers to run them and had lots of problems.
However thinking this through a little more, they have almost all been
Dell. Dell made news by knowingly selling computers with defective parts.
Are old IBM computers more reliable? or is there another brand that
can be trusted even when quite ( old > 10 years ).
My response was not referring to "old computers being unreliable". It
was more in regards to you mentioning "another modern SBC or small
inexpensive PC that you could recommend for use with FreeDos". I used to
have a plethora of old PCs, of various makes and models (until most of
them were destroyed by an imbecile) and the most common reliability
issue was in fact the power supplies. And of course, hard drives aren't
getting any better with age either. Those are issues that effect all
brands...
Ralf
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