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PDP18B: Update console CR/LF echo behavior from Bob Supnik

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The terminal service (in the ISR) forces a CR to be output IMMEDIATELY (before anything in the output queue) when 0212 is seen on input, so it needs to echo as a LF.

I hadn't seen any (other) echo support, so I had assumed the interface was half-duplex, which of course means passwords would appear on the paper!
This commit is contained in:
Mark Pizzolato 2016-03-15 11:32:26 -07:00
parent 7251196f31
commit 74a0101771
1 changed files with 2 additions and 2 deletions
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4
PDP18B/pdp18b_stddev.c
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@ -1073,9 +1073,9 @@ if (c & SCPE_BREAK) /* break? */
else c = sim_tt_inpcvt (c, TT_GET_MODE (uptr->flags) | TTUF_KSR);
if (uptr->flags & TTUF_UNIX) { /* unix v0? */
if (c == 0215) /* cr -> lf */
c = 0212;
c = out = 0212;
else if (c == 0212) /* lf -> cr */
c = 0215;
c = out = 0215;
else if (c == 0233) /* esc -> altmode */
c = 0375;
}