25 Sep
2014
25 Sep
'14
8:42 a.m.
On Sep 25, 2014, at 11:04 AM, Al Kossow <aek at bitsavers.org> wrote:
On 9/25/14 7:51 AM, Paul Koning wrote:
I see restore #n in that manual, but no file #n statement. It looks much more like the
(non-MU) RT-11 BASIC than like the sample in the original note.
And I?m still wondering about that date/time at the top of the listing (on the webpage).
That doesn?t look at all like a DEC timestamp, but it is exactly a CDC timestamp as seen
on the 60 bit mainframes.
Ok, I just found a NOS BASIC manual (BASIC 2.1, CDC document number 19980300). It
matches. Section 2 shows a FILE statement just as in the sample, and also, the examples
show the header on the LIST command output in exactly the form shown on the website.
Also, it shows the prompt ?READY.? (with period).
On RT-11 BASIC: no, it isn?t that either. I
worked on that, it looks like traditional BASIC (like BASIC-PLUS without the later
extensions).
it's MU-BASIC
http://bitsavers.org/pdf/dec/pdp11/basic/DEC-11-LIBRA-A-D_mubasic_May75.pdf
and it looks like the kiddies got nowhere figuring it out last April. From what that manual shows, the statements in question
do what you would think: FILE #n = ?FOO? is the same as standard BASIC OPEN ?foo? AS
FILE 1. And yes, RESTORE #n resets the file pointer to the start of the file.
paul