1 May
2019
1 May
'19
3:20 p.m.
On 2 May 2019, at 07:47, Eric Smith via cctalk
<cctalk at classiccmp.org> wrote:
The VAX 8600 and 8650 were the last VAX models to have PDP-11 compatibility
mode, so if the purpose of VMS 4.0 was to support the 8600, I would expect
it to still contain compatibility mode support. VMS versions at least as
late as 5.2 still supported the 8600. I don't have firsthand experience, as
the only 8600 I used ran BSD.
I seem to recall that there was a software implementation of compatibility mode to allow
PDP-11 code to be run on VAX hardware that didn?t have it natively.
At one stage I used to manage a very eclectic mix of VAX systems, including 11-780,
11-785, 8650, 8700, 8800, 8820, 8840, 6300, 6600, 7740.
Huw Davies | e-mail: Huw.Davies at kerberos.davies.net.au
Melbourne | "If soccer was meant to be played in the
Australia | air, the sky would be painted green"