On 7/17/23 10:51, Paul Koning via cctalk wrote:
Seen on the GCC bugzilla:
"actually, there are 10 types of people: those who understand ternary, those who
dont, and those who thought this was going to be a binary joke"
:-)
paul
HA!!!
Another version: "There are two types of peopl
On Sun, Jul 16, 2023 at 09:56:52PM -0600, Warner Losh wrote:
> So, what I'd like to do is to is somehow organize all this. I wrote some
> software to extract files from the filesystem.So I'd like to have a
> separate copy of the expanded files.
>
What I did is use cgi-bin so site only has the med
> On Jul 17, 2023, at 5:33 PM, Chuck Guzis via cctalk
> wrote:
>
> On 7/17/23 11:53, Ethan Dicks via cctalk wrote:
>
>> Chuck Dickman's algorithm is in lbn2rx50.c
>>
>> #define RX50_TRACKS 80
>> #define RX50_SECTORS 10
>>
>> int interleave[] = { 0, 2, 4, 6, 8, 1, 3, 5, 7, 9 };
>>
On Mon, Jul 17, 2023, 3:34 PM Chuck Guzis via cctalk
wrote:
> On 7/17/23 11:53, Ethan Dicks via cctalk wrote:
>
> > Chuck Dickman's algorithm is in lbn2rx50.c
> >
> > #define RX50_TRACKS 80
> > #define RX50_SECTORS 10
> >
> > int interleave[] = { 0, 2, 4, 6, 8, 1, 3, 5, 7, 9 };
> >
> >
On 7/17/23 11:53, Ethan Dicks via cctalk wrote:
> Chuck Dickman's algorithm is in lbn2rx50.c
>
> #define RX50_TRACKS 80
> #define RX50_SECTORS 10
>
> int interleave[] = { 0, 2, 4, 6, 8, 1, 3, 5, 7, 9 };
>
> track = lbn/RX50_SECTORS;
> track = (track + 1)%RX50_TRACKS;
>
> s
On Mon, 17 Jul 2023 at 14:56, Warner Losh wrote:
>
>
> On Mon, Jul 17, 2023, 12:42 PM Henry Bent via cctalk <
> cctalk@classiccmp.org> wrote:
>
>>
>> I truly feel for the folks who had to do this at the time, using 38
>> floppies on a MicroVAX I. The installer does give time estimates for
>> cer
On Mon, Jul 17, 2023, 12:42 PM Henry Bent via cctalk
wrote:
> On Mon, 17 Jul 2023 at 13:06, Henry Bent wrote:
>
> > On Mon, 17 Jul 2023 at 12:59, Ethan Dicks via cctalk <
> > cctalk@classiccmp.org> wrote:
> >
> >>
> >> > From: http://www.chdickman.com/pdp11/pro380.txt
> >> >
> >> > "The RX50 flo
On Mon, Jul 17, 2023 at 1:05 PM Paul Koning via cctalk
wrote:
> > On Jul 17, 2023, at 12:51 PM, Ethan Dicks via cctalk
> > wrote:
> >
> > On Mon, Jul 17, 2023 at 12:48 PM Ethan Dicks wrote:
> >> From: http://www.chdickman.com/pdp11/pro380.txt
> >>
> >> "The RX50 floppy starts at track 1. Track
On Mon, 17 Jul 2023 at 13:06, Henry Bent wrote:
> On Mon, 17 Jul 2023 at 12:59, Ethan Dicks via cctalk <
> cctalk@classiccmp.org> wrote:
>
>>
>> > From: http://www.chdickman.com/pdp11/pro380.txt
>> >
>> > "The RX50 floppy starts at track 1. Track 0 is logically placed after
>> > track 79. The sec
I have had good luck with a secfor convolver from the same page as this
comment: http://www.chdickman.com/pdp11/lbn2rx50.cIt will go both ways,
to and from physical block order and logical block order. For people
working on P/OS or RSX, without a c compiler, here is a utility that can
convert f
On Mon, Jul 17, 2023, 10:59 AM Ethan Dicks via cctalk
wrote:
> On Mon, Jul 17, 2023 at 12:48 PM Ethan Dicks
> wrote:
> > On Mon, Jul 17, 2023 at 12:28 PM Henry Bent via cctalk
> > > I'm almost thoroughly unfamiliar with IMD - is there some obvious
> > > extraction/conversion option that I am mis
On Mon, 17 Jul 2023 at 12:59, Ethan Dicks via cctalk
wrote:
>
> > From: http://www.chdickman.com/pdp11/pro380.txt
> >
> > "The RX50 floppy starts at track 1. Track 0 is logically placed after
> > track 79. The sectors are interleaved 1, 3, 5, 7, 9, 0, 2, 4, 6, 8,
> > 10. The track shift and inter
> On Jul 17, 2023, at 12:51 PM, Ethan Dicks via cctalk
> wrote:
>
> On Mon, Jul 17, 2023 at 12:48 PM Ethan Dicks wrote:
>> From: http://www.chdickman.com/pdp11/pro380.txt
>>
>> "The RX50 floppy starts at track 1. Track 0 is logically placed after
>> track 79. The sectors are interleaved 1,
On Mon, Jul 17, 2023 at 12:48 PM Ethan Dicks wrote:
> On Mon, Jul 17, 2023 at 12:28 PM Henry Bent via cctalk
> > I'm almost thoroughly unfamiliar with IMD - is there some obvious
> > extraction/conversion option that I am missing here?
As mentioned previously, yes. There's an additional step tha
> On Jul 17, 2023, at 12:28 PM, Henry Bent via cctalk
> wrote:
>
> Hi all,
>
> I just noticed that images of a full RX50 floppy set for Ultrix-32m 1.2 was
> posted on Bitsavers (
> http://bitsavers.trailing-edge.com/bits/DEC/vax/ultrix/1.2/ULTRIX-32M_V1.2_RX50_1986.zip
> ). I am having diff
On Mon, Jul 17, 2023 at 12:48 PM Ethan Dicks wrote:
> From: http://www.chdickman.com/pdp11/pro380.txt
>
> "The RX50 floppy starts at track 1. Track 0 is logically placed after
> track 79. The sectors are interleaved 1, 3, 5, 7, 9, 0, 2, 4, 6, 8,
> 10. The track shift and interleave must be taken i
On Mon, Jul 17, 2023 at 12:28 PM Henry Bent via cctalk
wrote:
> I just noticed that images of a full RX50 floppy set for Ultrix-32m 1.2 was
> posted on Bitsavers (
> http://bitsavers.trailing-edge.com/bits/DEC/vax/ultrix/1.2/ULTRIX-32M_V1.2_RX50_1986.zip
> ). I am having difficulty parsing these
On 7/17/23 09:28, Henry Bent via cctalk wrote:
> Hi all,
>
> I just noticed that images of a full RX50 floppy set for Ultrix-32m 1.2 was
> posted on Bitsavers (
> http://bitsavers.trailing-edge.com/bits/DEC/vax/ultrix/1.2/ULTRIX-32M_V1.2_RX50_1986.zip
> ). I am having difficulty parsing these ima
Hi all,
I just noticed that images of a full RX50 floppy set for Ultrix-32m 1.2 was
posted on Bitsavers (
http://bitsavers.trailing-edge.com/bits/DEC/vax/ultrix/1.2/ULTRIX-32M_V1.2_RX50_1986.zip
). I am having difficulty parsing these images into a usable raw format
for SIMH.
As a reference, TUH
On Mon, Jul 17, 2023, 8:51 AM Paul Koning via cctalk
wrote:
> Seen on the GCC bugzilla:
>
> "actually, there are 10 types of people: those who understand ternary,
> those who dont, and those who thought this was going to be a binary joke"
>
I almost didn't open this... but I'm glad I did... thou
Seen on the GCC bugzilla:
"actually, there are 10 types of people: those who understand ternary, those
who dont, and those who thought this was going to be a binary joke"
:-)
paul
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