18 Jun
2023
18 Jun
'23
6:03 p.m.
Hey Mark,
Just getting to this a few days after the fact. I'm (slowly) packing up
to move in July, so some of my side projects have had to take a 'back
burner' as it were.
Those are some intriguing bits! Two quick questions:
1. Was there a URL of a DAP specification that documents these? How did
you happen across them?
2. What OS's support them? I guess from Johnny's list that RSX doesn't
currently do so. Perhaps only VMS, then?
--T
------------------------------------------------------------------------
On 6/2/23 10:38 AM, Mark Berryman wrote:
Continuing from bit 63 appears to be:
SEMANTICS. ; 64 Supports semantics attributes extention message.
BINTIM ; 65 Supports Binary Time formats
PACKETCHK ; 66 Supports Packet level checksum
DDTM ; 67 Supports Digital Distributed Transaction Processing
MSBRCW ; 68 Supports Sequential MSB Variable Length Record Control Word
LENNAMBUF ; 69 Supports LENNAMBUF field in ACCESS message
Mark Berryman
------------------------------------------------------------------------
On Jun 1, 2023, at 5:07 PM, Johnny Billquist<bqt(a)softjar.se> wrote:
.
.
.
Here is what is defined in RSX:
;
; SYSCAP System Capabilities
;
.
.
.
> ; 9
> CP$BIO'B'= 001 ; 56 Block I/O Access modes *** V7.2
> CP$BRO'B'= 002 ; 57 Switching between Record and Block
Access
> CP$MFA'B'= 004 ; 58 Storage of main file attributes
> CP$BSZ'B'= 010 ; 59 Non-8-bit aligned data
> CP$SRF'B'= 020 ; 60 Stream Record Format as default ASCII
text
> CP$IP1'B'= 040 ; 61 Indexed file Prologue structure Version
I
> CP$IP2'B'= 100 ; 62 Indexed file Prologue structure Version
II
> ; 10
> CP$IP3'B'= 001 ; 63 Indexed file Prologue structure Version
III
> ;CP$xx'B'= 002 ; 64
> ;CP$xx'B'= 004 ; 65
> ;CP$xx'B'= 010 ; 66
> ;CP$xx'B'= 020 ; 67
> ;CP$xx'B'= 040 ; 68
> ;CP$xx'B'= 100 ; 69
> ; 11
> ;CP$xx'B'= 001 ; 70
> ;CP$xx'B'= 002 ; 71
> CP$XCP'B'= 004 ; 72 Extended SYSCAP field (RESERVED)