🚀 go-pugleaf

In article <1990Jan12.222613.28109@athena.mit.edu: rlcarr@space.mit.edu (the Wizard of Speed and Time) writes:
:I have almost decided to buy either an A2620 or A2630 accelerator board.
:My current setup:
:A2000 w/Super Agnus and 1 meg chip RAM
:4 meg of fast RAM
:HardFrame/2000 SCSI controller
:
:(1) Will the A2620 allow you to boot off the 68000?  What about the A2630?

	Yes on both counts.

:(2) Can KickStart ROM be copied to the 32 bit ram on the A2620?  What about
:    the A2630?

	Again yes on both. Use SetCPU FASTROM.

:(3) How much faster (overall, graphics, hard drive I/O,
:    and math grinding) is the A2620 compared to my A2000?   How about
:    the A2630 compared to my A2000?  The A2630 compared to the A2620?

	I don't have a 2620, but the most accurate speed test I have (Speed,
by Jez San or Argonaut Software) shows me at 6 times the speed of a 1000
and 2 times the speed of a 2620. My HDs now all run at the fastest I'd
expect them to... ~600K/sec with RLL and ~400K/sec with MFM. Note I have
a Supra Wordsync nonDMA controller, so your speed *will* vary from mine.

:(4) What kind of RAM does the A2620 use?  The A2630?  How hard is it to find?
:    How hard to install?

	They both use 256Kx4 ZIPs at 100ns. Pretty easy to find and not too
expensive. (You should be able to find them for less than $15 each.)

:(5) If I someday ever want to run Amiga UNIX, can I run it with an A2620?
:    How about with an A2630 (assuming I get a big enough hard drive,of course)?

	Don't know here for sure, but the first beta AMIX machines were used
with 2620s. The release might require a 2630. I know it currently requires
C=s HD controller and a tape drive.

:(6) Can I put hard drive buffers in 32bit ram?  Right now I can put hard drive
:    buffers in my fast ram.

	Youu should be able to.

:(7) Does the 32bit RAM autoconfig?

	Yes. The 2630 also has a RAM expansion buss for piggybacked ram
boards. My guess is that boards built for this buss will not be autoconfig.
But, you can put 64 meg of ram on it!

:(8) will the A2620 be able to access my 4 meg of fast ram?  What about
:    the A2630?

	Yes to both.

:(10) is there any way to force a program to be placed in 32 bit RAM?
:     can you force a program into 16 bit RAM?

	I believe there's a PD utility for individually setting memory
priority for each bank of memory on the system. Kind of a super FastMemFirst.
Judicious use of that would allow youto choose where pretty much anything goes.

:That's all for now - but if you can think of other information, please
:pass that along too.

	All I can add is that I *like* my 2630! Things are a joy once more!

:Thanks!
:
:--
:Rich Carreiro - Most Biased Boston Celtics Fan!   "So long, farewell, and may
:ARPA: rlcarr@space.mit.edu                         the forces of evil become
:UUCP: ...!mit-eddie!space.mit.edu!rlcarr           confused on the way to your
:BITNET: rlcarr@space.mit.edu                       door!" - George Carlin


-- 
     -Bill Seymour             ...tektronix!reed!percival!agora!billsey
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