26 Jun
2016
26 Jun
'16
6:39 p.m.
On 6/26/2016 2:48 PM, Noel Chiappa wrote:
PDP11GUI reads papertape files as 8b binary, but on download translates the
output to console deposit commands, which are just 7b printable ascii; ie 'D 0'
to send a binary 0x00 to the target system. So no 8b required here.
The PDP11GUI serial driver does binary block transfers as base64 uuencoded
streams, which are also just plain ascii 7b text:
; high speed buffer access over serial port 0
;
; Compression:
; like uuencode / base64
; Each serial char defines 6 bits, char is in range 0x20 .. 0x5f
; 8 chars defines 3 words
; Char # : <.0..> <..1..> <..2..> <.3..> <.4..>
<..5..> <..6..>
<.7..>
; Char Bits : 543210 54 3210 5432 10 543210 543210 54 3210 5432
10 543210
; bytes : 765432 10 7654 3210 76 543210 765432 10 7654 3210 76
543210
; byte # : <...0...> <...1...> <...2...> <..3....>
<...4...> <...5...>
; word # : <...msb0....lsb0..> <...msb1....lsb1..>
<..msb2.....lsb2..>
From: Fritz
Mueller
So far I haven't seen any place in PDP11GUI
to set anything other than
port and baud rate
You might have to use native OS tools to do that. On Unix, that will be
'stty'; on Windows, you'd have to use native Windows tools to do that; if
you
go to the Device Manager, select your serial port, and click on 'Properties',
it has a tab ('Port Settings') for that (or, should I say, it used to - not
sure about the most recent versions, they're making it all smart-phone like
for brain-dead lusers).
From: Don North
Mostly PDP11GUI does not care, either 7b or 8b.
I'm kind of surprised to hear that; I assumed that PDP11GUI can download
binaries, and for that, 8-bit is kind of necessary?