213 lines
6.1 KiB
Plaintext
213 lines
6.1 KiB
Plaintext
These are emails from an employee at Psion who worked on the 5mx and
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provide some technical information. Thanks to Tony <tony@atomide.com> for
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forwarding me these.
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Date: Tue, 08 Aug 2000 20:52:12 +0100
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From: Atish Nazir <hashaday@littleworld.freeserve.co.uk>
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To: Peter Liniker <pl198@doc.ic.ac.uk>
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Subject: Re: [Linux-7110-psion] psion5mx (fwd)
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re:
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---
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> * the memory map
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---
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be more specific. what would you like to access?
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re:
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---
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> * MMU details, esp. EPOC's MMU usage, so that ArLo can load the kernel
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> into memory, initialise FiPaBoL and start it
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---
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hard one, because i'm not too clued up on that aspect of base. one
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solution would be to install yourself as a "PartnerOS" - something EPOC
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does have a provision for for the Philips smart phone of years ago.
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documentation is very sparse though.
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re:
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---
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> * ROM/serial/CF boot mechanism (latter two netbook only)
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---
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hehehe boss and i wrote this bit :o) protocol is basically YModem with
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a few optional extras - i.e. any terminal program will be okay. the
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exact specifics of the S7 client is unknown to me as a contractor at
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Enterprise wrote it (a perpetually up beat guy).
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re:
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---
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> * ROM/RAM speeds
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---
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varies according to machine _and_ when it was built in production
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cycle. i.e. early machines have flash and later we switch to mask ROM
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(with a small patch flash, should it be needed).
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re:
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---
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> * interrupt handling
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---
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erm, it works...
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re:
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---
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> * all the device interface specs:
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> -- CF slot/card
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---
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function spec for ETNA - i'll find out, whom you have to speak about
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this or whether i can release this (quite possible, but remember to say
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thank you).
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re:
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---
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> -- PCMCIA slot/card
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---
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functional spec for ASIC14 - ask Enterprise.
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re:
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---
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> -- sound in/out, audio codecs
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---
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5, 5mx and Revo, sound out is identical (same drivers used in fact).
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except on Revo, there's a slight pin move (can't remember what however,
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it wasn't the buzzline). Revo sounds record is obviously disabled...
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S7, go ask Enterprise...
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re:
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---
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> -- screen
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---
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Eiger and Windermere have similar, but certainly different LCD
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controllers on board - you'll have to change you device driver. i can't
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give more details, because i don't know any more here - never worked on
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that aspect.
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re:
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---
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> -- pointer
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---
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ADC talks directly to main ASIC via SSP interface (changed on 5mx)
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re:
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---
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> -- serial
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---
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UARTs integrated on main ASICS. Eiger only had one, Windy has two.
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re:
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---
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> -- irda
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---
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see the bit about UARTs - same UARTs used for RS232 and talking to
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IRDA.
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re:
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---
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> -- power management/monitoring
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---
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hmm. 5, 5mx have voltmeters (same ADC as pointer). Revo has dedicated
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current counter, talks via GPIO to main ASIC with a very slow
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asynchronous serial protocol.
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re:
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---
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> -- timers
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> * Which of these are the same as series5?
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---
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same as before.
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re:
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---
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> * Config used for the SA1100 and support.
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---
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how many ports are going here? the people to contact would be Psion
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Enterprise as it's really more their turf.
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re:
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---
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> * "ETNA" specs (this is the main ASIC, AFAIK)
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---
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no, rubbish. ETNA is a helper ASIC. chip code names: Eiger,
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Windermere and SA1100 (affectionately known as Sally), which correspond
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to 5, 5mx and Revo, and S7 and Net book.
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re:
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---
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> * We'd also like the ER5 DDK info/headers - enough to compile arlo
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> "properly".
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---
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you'll need the E32 tree, this comes with the OCK and DDK. since i use
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the OCK (something only available to licensees of Symbian), i wouldn't
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know how to obtain a copy of the DDK from Symbian (other than asking
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nicely, but i can't imagine that working when they inevitably ask why
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you want it). soz. been speaking to bossman and it looks like you'll
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have to become a Symbian licencee / partner - PSION can't help you here
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because it will violate our agreement with the collective.
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IF YOU'RE INTERESTED:
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if one individual is prepared to sign an NDA and many other evil
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agreements (IPR etc) we have, i _might_ (not a promise, a lot of red
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tape would have to be cleared and i'd have to speak to a lot of people)
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be able to provide the full Windermere spec for free.
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however if a few people are London based, what may a more attractive
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solution, a few members of the systems team could give a short seminar
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or something along those lines, answering questions in person, giving
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the vital information and so forth...
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n.b. both these proposals have to be confirmed with other powers that
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be.
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--- --- ---
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.~. the way of the Sacred Penguin is the path of
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/V\ the truly righteous...
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// \\/
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/( ) hashaday@littleworld.freeserve.co.uk
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^`~'^ http://thor.prohosting.com/~hashaday/
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_______________________________________________
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Linux-7110-psion mailing list
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Linux-7110-psion@lists.sourceforge.net
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http://lists.sourceforge.net/mailman/listinfo/linux-7110-psion
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---------- Forwarded message ----------
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Date: Tue, 08 Aug 2000 18:45:00 +0100
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From: Atish Nazir <hashaday@littleworld.freeserve.co.uk>
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To: Peter Liniker <pl198@doc.ic.ac.uk>
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Subject: Re: [Linux-7110-psion] psion5mx (fwd)
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re:
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---
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> Etna is the S5 ASIC, AFAIK.
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---
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ETNA (aka ASIC12) is the _helper_ ASIC for Eiger (S5) and Windermere
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(5MX). it adds CF capabilities and some other gubbins. basically it
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adds more pins to the CPU.
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re:
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---
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> Is the S5mx/7 ASIC called Etna? (Although you may not be able to answer
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> this!)
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---
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the S7 and NetBook uses ASIC14 (aka "that many legged bastard"), which
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has nothing really in common with ETNA other than it was designed by the
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same guy (and uses same VHDL for the timers, copy and paste is a
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wonderful thing). it's also a helper ASIC, the exact specifics i can't
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be sure of because Enterprise have done a lot of developmental work on
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it...
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--- --- ---
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.~. the way of the Sacred Penguin is the path of
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/V\ the truly righteous...
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// \\/
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/( ) hashaday@littleworld.freeserve.co.uk
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^`~'^ http://thor.prohosting.com/~hashaday/
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_______________________________________________
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Linux-7110-psion mailing list
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Linux-7110-psion@lists.sourceforge.net
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http://lists.sourceforge.net/mailman/listinfo/linux-7110-psion
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