14 Feb
2010
14 Feb
'10
11:20 p.m.
On 2/14/2010 5:07 PM, e.stiebler wrote:
Jim Brain wrote:
No, which is why I was considering the
TPIC and some 74'245s
There has also been significant interest in the
CBM world for an
uIEEE solution, so I have sketched out a solution that utilizes the
AVR. FOr the IEEE bus I am considering both the 75160/75161 versus a
pair of input buffers and a pair of TPIC6B273
<http://focus.ti.com/lit/ds/symlink/tpic6b273.pdf> high current
output drivers. Currently, the 7516X units are a price premium, but
the price difference is minimal.
The uIEC firmware currently supports FAT16/FAT32
and SD/SDHC/IDE
protocols already, I simply need to write the IEEE support.
You have enough I/O pins for the HP-IB bus ?
How fast ist this AVR reading and writing from sd-flash ?
We run the SPI clock at
1MHz, so we can clock in at ~ 125kBPS
jim
--
Jim Brain, Brain Innovations (X)
brain at jbrain.com
Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times!
Home: http://www.jbrain.com