Timothe,
Thanks for responding. This sounds reasonable. I'm ok with using the
.TTYOU and .TTYIN macros which call EMT's for actual programs in RT-11.
But, while learning, there are some things like this that I want to do
that may be tricky/ill advised to do in RT-11.
What do you think the easiest way is to load a program like this
directly onto the bare hardware (simulated, of course)?
Thanks,
Will
On 2/19/16 4:01 PM, Timothe Litt wrote:
The console terminal driver won't like you touching the device registers.
Don't do that. Use the RT-11 syscalls instead.
Or load your program into the (emulated) bare hardware, and have fun.
This communication may not represent my employer's views,
if any, on the matters discussed.
On 19-Feb-16 16:58, Will Senn wrote:
Given the following test program that I wrote (GETC.MAC):
.title getc
.mcall .exit
TKS = 177560
TKB = 177562
;TPS = 177564
;TPB = 177566
begin:
inc TKS ;set the ASR read enable bit
getc:
tstb TKS ;is a character available?
bpl getc ;loop until there is
movb TKB,R0 ;put the character into register 0
.exit
.end begin
I would expect the console to wait until I typed a single character
and then for the program to exit. What is happening is that the
program appears to accept any number of characters and only ends when
I type CTRL-C twice.
Here are some questions that arise:
1. Is it reasonable to expect to be able to read directly from the ASR
Keyboard buffer while running RT-11 in SimH or does this somehow
compete with the running OS? (I can print characters using the ASR
Punch Buffer just fine)
2. Is there a flaw in the program? (Nevermind that it doesn't do
anything much with the character).
3. Is this a totally abnormal way to read a character?
4. What's up with needing to hit CTRL-C twice?
Answers to any of the above would be appreciated or if you have
something else, that's fine too.
Thanks,
Will
_______________________________________________
Simh mailing list
Simh@trailing-edge.com
http://mailman.trailing-edge.com/mailman/listinfo/simh
_______________________________________________
Simh mailing list
Simh@trailing-edge.com
http://mailman.trailing-edge.com/mailman/listinfo/simh
_______________________________________________
Simh mailing list
Simh@trailing-edge.com
http://mailman.trailing-edge.com/mailman/listinfo/simh
