2 Jan
2018
2 Jan
'18
10:13 a.m.
From: Toby Thain
If the documentation is good enough, people in the
community will be
able to provide the software.
You mean, host drivers?
Yeah, that documentation will be pretty trivial: 'there's this extra
register, just like the one in the RLV12; the top 6 bits of the DMA memory
address go in there - the bottom two bits are mirrored into the two extended
memory bits in the CSR'. For the 'extended' RP11, not much more than that.
If you mean the 'software' for additional controllers - that would be a _lot_
harder (plus to which it's an entirely different tool-chain, yadda-yadda).
'Use the source, Luke!', I'm probably afraid...
Noel
2 Jan
2 Jan
10:17 a.m.
On 01/02/2018 01:13 PM, Noel Chiappa via cctalk wrote:
If you mean the 'software' for additional
controllers - that would be a _lot_
harder (plus to which it's an entirely different tool-chain, yadda-yadda).
'Use the source, Luke!', I'm probably afraid...
Oh, I hadn't thought of Toby possibly meaning that.? Yeah, I'm unlikely
to write up much documentation on the internals of the QSIC for people
who want to add other devices.? However, not only will the source be
available, I'll be around (hopefully) and will be quite willing to
answer questions.? Shoot, if anyone shows interest I'll probably talk
their ear off about it.
11:05 a.m.
On 2018-01-02 1:17 PM, David Bridgham via cctalk wrote:
On 01/02/2018 01:13 PM, Noel Chiappa via cctalk
wrote:
Yes, that's what I meant. In fact I thought that was the point of the
device :)
If you mean the 'software' for additional
controllers - that would be a _lot_
harder (plus to which it's an entirely different tool-chain, yadda-yadda).
'Use the source, Luke!', I'm probably afraid...
Oh, I hadn't thought of Toby possibly meaning that.? Yeah, I'm unlikely
to write up much documentation on the internals of the QSIC for people
who want to add other devices.? However, not only will the source be available, I'll be around (hopefully) and will be
quite willing to
answer questions.? Shoot, if anyone shows interest I'll probably talk
their ear off about it.
Hope so. And there's always the blog?
--Toby
noon
On 01/02/2018 02:05 PM, Toby Thain via cctalk wrote:
Well, I guess I thought the point was to produce a working replacement
for the disk drives that are nearly unobtainable but if it turns out
that lots of people are seriously interested in developing for the QSIC
itself, then I'll have to revisit that supposition.? In that case, I'd
probably write up more internals documentation than I would otherwise.
Oh, I
hadn't thought of Toby possibly meaning that.? Yeah, I'm unlikely
to write up much documentation on the internals of the QSIC for people
who want to add other devices.? However, not only will the source be
Yes,
that's what I meant. In fact I thought that was the point of the
device :) Hope so. And there's always the blog?
Blog?? Is there a blog about the QSIC that I don't know about?? I'm not
much of a blogger but if you get me started talking about things that
interest me I tend to rattle on to excess.
12:38 p.m.
On 2018-01-02 3:00 PM, David Bridgham via cctalk wrote:
On 01/02/2018 02:05 PM, Toby Thain via cctalk wrote:
Well, I guess I thought the point was to produce a working replacement
for the disk drives that are nearly unobtainable but if it turns out
that lots of people are seriously interested in developing for the QSIC
itself, then I'll have to revisit that supposition.? In that case, I'd
probably write up more internals documentation than I would otherwise.
Err.. could be my mistake... I meant wherever you posted your last
technical note about QBus quirks. (I didn't look up the reference)
--Toby
Oh, I
hadn't thought of Toby possibly meaning that.? Yeah, I'm unlikely
to write up much documentation on the internals of the QSIC for people
who want to add other devices.? However, not only will the source be
Yes,
that's what I meant. In fact I thought that was the point of the
device :) Hope so. And there's always the blog?
Blog?? Is there a blog about the QSIC that I don't know about?? I'm not
much of a blogger but if you get me started talking about things that
interest me I tend to rattle on to excess.
3:38 p.m.
On 1/2/18 15:38, Toby Thain via cctalk wrote:
Err.. could be my mistake... I meant wherever you
posted your last
technical note about QBus quirks. (I didn't look up the reference)
Oh, that paper I wrote about how bus arbitration works on the Unibus and
QBUS.? I'd thought of it as just a way of passing on information I'd
learned to the community about something I thought was interesting but
you're right, it also serves to document some of the internals of the
QSIC since that's where I took it from.
2498
days inactive
2498
days old
5 comments
3 participants
participants (3)
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dab＠froghouse.org -
jnc＠mercury.lcs.mit.edu -
toby＠telegraphics.com.au