RE: [ts-7000] Re: How to change from 7260 to 7800, keep PC/104 cofiguration

["Robert Joslyn" <>]

I took a look at the 7260 manual, and sure enough, it uses a non-standard PC/104 bus pinout.  I guess it helps to read the manual before I respond J  The manual does describe the changes to the connector.  They’ve only implemented a subset of the PC/104 standard bus so that they could have a 16-bit bus on the 8-bit connector.  By removing the pins for DMA, some IRQ lines, etc, they have room for those data pins and added them in a non-standard location.  Using your example, the 7260 has removed IRQ9 and placed Data 8 there.  Data 8 is normally pin C11.

 

I guess it would depend on your particular application as to whether you’ll need to move pins around.  If you use those data pins and the non-standard 16-bit implementation, you’ll have to move pins to the proper location for the 7800.  If you don’t use that non-standard 16-bit implementation and only use the standard 8-bit bus, you should be fine switching to a 7800. 

 

Robert

 

 

From: [ On Behalf Of palito.farias
Sent: Thursday, December 29, 2011 12:00 PM
To:
Subject: [ts-7000] Re: How to change from 7260 to 7800, keep PC/104 cofiguration

 

 

Hi Robert,
In the 8-bit 7260 the pins are mapped differently for example B4 is a data line (that I'm using and have a daughter board that depends on the data coming in there). The same pin (B4) is an IRQ line on the 7800. I guess this is my question how to deal with these differences in the best way.
Thank you!
/Paloma

--- In ts-7000%40yahoogroups.com, "Robert Joslyn" <m("...","robertj");">> wrote:
>
> What is non-standard about the PC/104 bus in the 7260? Do you mean the
> 8-bit vs 16-bit bus types? The PC/104 spec defines the two bus types
> and are made so that you can still use a 8-bit device on the 16-bit
> connector. I don't have a 7260, so unless there is some quirk about it,
> the 7260 just has an 8-bit bus while the 7800 supports a 16-bit bus.
>
>
>
> Robert
>
>
>
> From: [mailto:] On Behalf
> Of palito.farias
> Sent: Wednesday, December 21, 2011 3:28 PM
> To:
> Subject: [ts-7000] How to change from 7260 to 7800, keep PC/104
> cofiguration
>
>
>
>
>
> I'm using an 7260 (upgraded kernel to linux 2.6) with a daughter plug-in
> board that uses the TS-7260 non-standard PC-104 configuration. I would
> like to upgrade to a TS-7800 but I'm concerned that the daughter board
> might not function properly with the standard ISA that the PC 104 on the
> 7800 utilizes. Does anybody have any experience on this? The daughter
> board has an fpga that I can easily re program in case it's needed for a
> different memory allocation etc but I don't think I have much
> flexibility moving pins around, I still need to read 16 bit.
> Any advice?
> All inputs are welcome! Thanks!
>

__._,_.___

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: =Email Delivery: Digest | m("yahoogroups.com?subject","ts-7000-fullfeatured");=Change Delivery Format: Fully Featured">Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | =Unsubscribe

__,_._,___