3 Dec
2010
3 Dec
'10
3:42 p.m.
[snip]
2) I don't want a pre-built board with peripherals I don't need on it. I
am a great believeer in actually designin the hardware to suit the
problem I am solving
-tony
-----REPLY-----
Hi,
Please check this approach to a SCSI to IDE and SD interface
My design for the SCSI to IDE and SD interface is just the basics:
Z80, RAM, ROM, UART, IDE, SD, and SCSI controller.
http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder¶m=SCSI2IDE
Everything fits comfortably on a Eurocard PCB.
All the part are commonly available for about $20-$30 total.
Thanks
Andrew Lynch
3 Dec
3 Dec
4:36 p.m.
On 03/12/2010 23:42, Andrew Lynch wrote:
Hi,
Please check this approach to a SCSI to IDE and SD interface
My design for the SCSI to IDE and SD interface is just the basics:
Z80, RAM, ROM, UART, IDE, SD, and SCSI controller.
http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder¶m=SCSI2IDE
Everything fits comfortably on a Eurocard PCB.
All the part are commonly available for about $20-$30 total.
Is the Z53C80 still available new ? If so from where ?
Cheers.
Phill.
--
Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric !
"You can twist perceptions, but reality won't budge" -- Rush.
6:04 p.m.
On 04/12/2010 01:30, Eric Smith wrote:
Phill Harvey-Smith wrote:
Humm, all hits searching for it on digikey.co.uk list it as non-stock,
the minimum order number of any of the parts listed is 175 chips, so
dunno how practical using that is going to be.
So looks like I'll stick with the AVR and a bunch of LS for now :)
Phill.
--
Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric !
"You can twist perceptions, but reality won't budge" -- Rush.
Is the Z53C80 still available new ? If so from
where ?
It is still made by Zilog, and still stocked by Digikey. 
6:47 p.m.
I wrote about the Z85C30:
It is still made by Zilog, and still stocked by
Digikey.
Phill Harvey-Smith wrote:
Humm, all hits searching for it on digikey.co.uk list
it as non-stock,
the minimum order number of any of the parts listed is 175 chips,
so dunno how practical using that is going to be.
I use digikey.com, not digikey.co.uk, and see eight variants in stock
(three DIP, five PLCC), all with a minimum quantity of one. The 8 MHz
DIP version is USD 8.79 for quantity one, and there are 700 in stock.
The also have the Z85230, which is an enhanced part. In small
quantities, it is about twice as expensive as the Z85C30.
Eric
6:34 p.m.
On 12/03/2010 08:30 PM, Eric Smith wrote:
Phill Harvey-Smith wrote:
Look again, they list it but have zero stock. That however is
certainly a key part if you wnat to do the SCSI as minimal
parts count.
However, watch out as the Nmos part and the Cmos part
are not completely interchangeable due to implementation
oddities. If memory serves the 53C part is also preferred
over the NMOS as less buggy.
If you want to know how to hook it up to a z80 see the
AmproLB+ schematics.
Allison
Is the Z53C80 still available new ? If so from
where ?
It is still made by Zilog, and still stocked by Digikey.
Eric
7:13 p.m.
Dyslexia strikes again. I thought you were looking for the 85C30, not
the 53C80. Sigh.
I doubt that anyone makes the 5380 or 53C80 anymore.
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participants (4)
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afra＠aurigae.demon.co.uk -
ajp166＠verizon.net -
eric＠brouhaha.com -
lynchaj＠yahoo.com