ajw99uk wrote:
I was going to point you to this one but the auction finished earlier today
yeap, too late, there is an other auction but that dude is asking too much (~180 Euro)
ajw99uk wrote:
I think you'd mentioned having a 486DX4/100
I had a
DX4
, then a swapped for a
486SX
, which is slower, btw when I swapped I was planning to upgrade to
5x86
, and as for money difference I also got a pair of great chips,
SPI-UART chips
. So I swapped
486DX4
, for a
486SX
+ marvelous chips.
These
SPI-UART
chips plus their crystals (you need the right value) are good if you want to add a debug interface to an
Hacked PDA
based on
EZ328
. I swapped also because … unfortunately I can't find any ucsimm/328 around, and these chips are hardly to be found.
ajw99uk wrote:
the performance difference is not that great (unless you find a 5x86 with 512KB cache rather than 128KB
486-DX4@100Mhz
against
586@100Mhz
… umm good match … about the
DOS software
that has to run under
!PC/Pro
, I think the 586 should be improved by all the improvements made with the internal architecture, the faster bus, which is 64bit instead of 32bit, but I do not think the gemini II chip has any benefits because the interface is 32bit, but ... a 586 has the burst mode, so in short I am expecting a speedup.
ajw99uk wrote:
but even then things like having a StrongARM rather than ARM710 make a bigger difference)
oh well, that machine is already equipped with a
SA@200Mhz
, I do not want to over clock to
220Mhz
, and … the
300Mhz
seems to cost a lot.
ajw99uk wrote:
I suggest you try comp.sys.acorn.hardware - probably a few people with unused PC cards, though I suspect mostly 486s
sure, thank you, I will also ask for a second slice-case (with pins), I am still without it and currently I do not have the CD/DVDrom because I have recycled the slot to accommodate the
MC68332
board. I have recycled a CD ROM box, I have unmounted, removed the electronics, adapted the box for my MC68332 board which is perfectly fitted inside. Currently I am also trying to adapt the CDROMs front panel to an LCD, 2x20, Hitachi, backlit, plus 2 buttons that are useful for the debug interface.
In short I'd like to use the
RiscPC
as "
(yet an other) MC68332 development station
", currently I have only the
SierraC/68k
under DOS, but … I can have a
RiscOS C native cross-compiler to 68K
(a friend has promised me), and I am already developing ethernet driver tool to directly interface the BDM, which sounds good, I mean instead of having a DOS application, under !PC, that controls the target
There are also 4 bugs with the RiscPC's RS232, and I can fix just 3 of them, but
RiscOS
is a funny OS, this is the main reason