30 Apr
2005
30 Apr
'05
1:25 p.m.
Hi,
has anyone tried to write a paper tape emulator in BASIC? I've had a go in
GW-BASIC, but I suspect that the implementation of the language is too slow
to reliably drive the serial port - it doesn't always pick up the paper
advance signal (I've tried using both CTS and DCD as inputs).
Will I have to go to a machine code routine to get the fast port access?
I look forward to replies.
Jim.
Please see our website the " Vintage Communication Pages" at WWW.G1JBG.CO.UK
30 Apr
30 Apr
4:03 p.m.
On Sat, 2005-04-30 18:25:08 +0100, Jim Beacon <jim at g1jbg.co.uk> wrote:
has anyone tried to write a paper tape emulator in
BASIC? I've had a go in
GW-BASIC, but I suspect that the implementation of the language is too slow
to reliably drive the serial port - it doesn't always pick up the paper
advance signal (I've tried using both CTS and DCD as inputs).
Well, I haven't ever actually played with a paper tape reader (or
writer), but I guess it cannot be that hard to write an emulator for it.
Are there specs available? If I ever find some time, I'd volunteer to
write one in C for POSIX systems.
MfG, JBG
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4 May
4 May
6:52 a.m.
Hi Jim,
has anyone tried to write a paper tape emulator in
BASIC?
Not in BASIC, but in C.
- it doesn't always pick up the paper
advance signal (I've tried using both CTS and DCD as inputs).
What kind of
interface does your Paper tape reader have? Serial RS232?
Then you need only linux and perhaps one
little modification to get it working flawlessly - let me know and I'll
explain.
I have once written a parallel paper tape reader emulator for my
Honeywell. It is written in C without any assembly language. Runs under
Linux and is a rough solution - don't expect too much. But it may
contain some useful hints.
http://h316.hachti.de/download/sw/tapeload-0.2.tar.gz
Will I have to go to a machine code routine to get the
fast port access?
If you use C it is not necessary... but there may be very
different
opinions :-)
Best wishes,
Philipp :-)
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hachti＠hachti.de -
jbglaw＠lug-owl.de -
jim＠g1jbg.co.uk