Re: EPIA flash questions

2004-08-29 Thread Miernik
Dmitry Borisov [EMAIL PROTECTED] wrote:
 
 I would not recommend hot swap. 20 times and then your contacts will fade or
 break( epia has very little space ).
 BIOS savior is much better solution if you plan to work with Linuxbios( I've
 burned mine 30+ times already with it... ).

Does anyone have any schematics of a BUIS savior (to do it yourself). 
I'm interested in making these, and maybe even selling them to 
interested people, but before I start designing my own schematics, 
maybe someone has seen it somewhere.

-- 
Miernik    xmpp:[EMAIL PROTECTED]
___/__ tel: +427 __/  mailto:[EMAIL PROTECTED]
http://www.miernik.ctnet.pl/   GPG:0xABC292D1

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Re: EPIA flash questions

2004-08-29 Thread Joshua Wise
Does anyone have any schematics of a BUIS savior (to do it yourself). 
I'm interested in making these, and maybe even selling them to 
interested people, but before I start designing my own schematics, 
maybe someone has seen it somewhere.
It's just a switch hooked up to the chip enable line of the ROMs.
joshua
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Re: EPIA flash questions

2004-08-29 Thread Joshua Wise
It's a hack of a BIOS savior using one FlashROM, no PCB, just a switch 
and three
wires. I don't know what the BIOS saviour is doing exactly, but 
generally you could
wire two identical FlashROMs in parallel (except the /CE signal).
Heck, you could wire as many as you'd like in parallel, as long as the 
motherboard's fanout is great enough.

The disadvantage to the hack using the 040 is that you only get 256k per 
side - with a /CE hack, it is theoretically possible to get 512k per 
side, given that you have a big enough flash chip.

Also put a pull-up resistor on the /CE of both flash parts so that when 
the switch is not selecting one of them, the /CE line is not floating.

joshua
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RE: EPIA flash questions

2004-08-27 Thread Marc Nicholas
Six boards are 'so many'? That's the entire EPIA range. ;-)

-marc

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of ron minnich
Sent: Thursday, August 26, 2004 11:29 PM
To: Marc Nicholas
Cc: 'Joshua Wise'; [EMAIL PROTECTED]
Subject: RE: EPIA flash questions

On Thu, 26 Aug 2004, Marc Nicholas wrote:

 Do either of you happen to know if all the EPIA boards use the same
PLCC
 Flash?

All? wow. There are so many. 

Our EPIA and EPIA-M all use the same part. I would be surprised if they 
did much else, since the southbridge is commonly only one of two types.

ron

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Re: EPIA flash questions

2004-08-26 Thread ron minnich
On Thu, 26 Aug 2004, Joshua Wise wrote:

 On board is a PLCC form factor 39SF020A. Mouser also carries the 
 39SF040A, which is a 512k ROM. The pinouts seem to be the same, but I'm 
 not sure whether the extra address lines are carried out anywhere. Does 
 anyone know whether the EPIA will be able to use the extra 256k?

I think it will, I've used that I'm pretty sure.

 Also, I was not planning on getting a BIOS savior. Does anyone have 
 experience with hotswapping flashes on the EPIA? Will bad things happen 
 if I do? Do I need to make myself an external board with chip select 
 lines, or can I just hotswap?

hot swap has always worked fine for me.

ron

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Re: EPIA flash questions

2004-08-26 Thread Nathanael Noblet
On Aug 26, 2004, at 2:42 PM, Joshua Wise wrote:
Hi folks,
Well, I finally got myself a Linuxbios supported board (an EPIA 
ME-6000). Later tonight I'm going to order a flash from Mouser to swap 
out, but before I do, I have a few questions:

On board is a PLCC form factor 39SF020A. Mouser also carries the 
39SF040A, which is a 512k ROM. The pinouts seem to be the same, but 
I'm not sure whether the extra address lines are carried out anywhere. 
Does anyone know whether the EPIA will be able to use the extra 256k?
Don't know, but would like to know so please post your success/failure 
back to the list

Also, I was not planning on getting a BIOS savior. Does anyone have 
experience with hotswapping flashes on the EPIA? Will bad things 
happen if I do? Do I need to make myself an external board with chip 
select lines, or can I just hotswap?
I've hotswapped it with a little PLCC puller probably 50 something 
times, not a problem yet.

--
Nathanael D. Noblet
Gnat Solutions
412 - 135 Gorge Road E
Victoria, BC V9A 1L1
T/F 250.385.4613
http://www.gnat.ca/
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Re: EPIA flash questions

2004-08-26 Thread Dmitry Borisov
- Original Message - 
From: Joshua Wise [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, August 26, 2004 2:42 PM
Subject: EPIA flash questions


 Hi folks,

 Well, I finally got myself a Linuxbios supported board (an EPIA
 ME-6000). Later tonight I'm going to order a flash from Mouser to swap
 out, but before I do, I have a few questions:

 On board is a PLCC form factor 39SF020A. Mouser also carries the
 39SF040A, which is a 512k ROM. The pinouts seem to be the same, but I'm
 not sure whether the extra address lines are carried out anywhere. Does
 anyone know whether the EPIA will be able to use the extra 256k?

 Also, I was not planning on getting a BIOS savior. Does anyone have
 experience with hotswapping flashes on the EPIA? Will bad things happen
 if I do? Do I need to make myself an external board with chip select
 lines, or can I just hotswap?

I would not recommend hot swap. 20 times and then your contacts will fade or
break( epia has very little space ).
BIOS savior is much better solution if you plan to work with Linuxbios( I've
burned mine 30+ times already with it... ).
Dmitry/

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RE: EPIA flash questions

2004-08-26 Thread Marc Nicholas
Do either of you happen to know if all the EPIA boards use the same PLCC
Flash?

-marc 

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of ron minnich
Sent: Thursday, August 26, 2004 5:50 PM
To: Joshua Wise
Cc: [EMAIL PROTECTED]
Subject: Re: EPIA flash questions

On Thu, 26 Aug 2004, Joshua Wise wrote:

 On board is a PLCC form factor 39SF020A. Mouser also carries the 
 39SF040A, which is a 512k ROM. The pinouts seem to be the same, but
I'm 
 not sure whether the extra address lines are carried out anywhere.
Does 
 anyone know whether the EPIA will be able to use the extra 256k?

I think it will, I've used that I'm pretty sure.

 Also, I was not planning on getting a BIOS savior. Does anyone have 
 experience with hotswapping flashes on the EPIA? Will bad things
happen 
 if I do? Do I need to make myself an external board with chip select 
 lines, or can I just hotswap?

hot swap has always worked fine for me.

ron

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RE: EPIA flash questions

2004-08-26 Thread ron minnich
On Thu, 26 Aug 2004, Marc Nicholas wrote:

 Do either of you happen to know if all the EPIA boards use the same PLCC
 Flash?

All? wow. There are so many. 

Our EPIA and EPIA-M all use the same part. I would be surprised if they 
did much else, since the southbridge is commonly only one of two types.

ron

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