[Simh] PDP8, Adventure, and SIMH

[Johnny Billquist]

On 2013-04-03 23:39, Rick Murphy wrote:
> At 08:12 AM 4/3/2013, Johnny Billquist wrote:
>> On 2013-04-03 14:03, Bob Supnik wrote:
>>> PDP-8s by default came with ASR/KSR-33 teletypes, which were upper case
>>> only (and the parity bit forced on). The default terminal option is
>>> 'KSR' to mimic that.
>>>
>>> When DEC began building its own terminals, like the LA36 and VT52, they
>>> offered upper and lower case. The '7b' option is there for that.
>>>
>>> Note that if you SET TTI 7b, start OS/8 (at least the version I have),
>>> and type dir instead of DIR, the command isn't recognized.
>>
>> I know that works for me, but it might be an issue with mark parity
>> (which all old OS/8 software expects), or it might be an issue with
>> CCL, which comes in many flavors.
>
> There's an OS/8 patch for KBM and CD to allow lower case input. It's
> "LCSYS.BI" on the Diagnostic RK05 that Rick Moore built which is widely
> distributed. UCSYS.BI restores the default operation.

I should check that one out. Thanks.
However, DIR is not a KBM command, but is something done by CCL. Unless 
I'm really confused...

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol