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Because Springboard slot is very similar to PCMCIA in respect of mechanical and electrical
specification, I bought and disassembled a PCMCIA-CF adapter card and used its inner board
as my base board. Some modifications must be done to this board to add Springboard-CF
bridge function.
The case is available from some company shown in Handspring's developer page.
This is the modified inner board. A decorder circuit using 74HC00 and 74HC04 is added and upper and lower bytes are swapped, and address bus shifting etc. are done.
Software/Driver are based on HandSpring's
sample code DiagRefModuleｌ(1.00).
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CardSetup Application: According to the specification
of Springboard, this application must be
installed in the flash ROM on the Springbaord.
It will launch automatically when the board
is inserted, and the driver is automatically
installed. But curretly my board doesn't
have flash ROM, so it is installed in RAM.
The application must be manually executed,
and then the driver for the wireless communication
card is installed. Card! Application: This application must be also installed in the flash ROM on the Springboard. Using this application, you can specify whether to use the serial port on the Springboard for hot-sync or other connection. HandTerm Application: A serial terminal program for testing. |
A screen shot of the Card! application.
You can choose if you use serial port on
springboard or not for each mode.
Check 'All Others' to connect to the internet
using CF wireless communication card.
To coneect to the internet, you must setup
preferences in Visor(Modem and Network) .
That's all.
The inner board is made by modifying PCMCIA-CF
adapter card on market.
I'm trying to develop CF Flash Memory Card
(FAT file system) Driver and some application.
If you can and you want to develop such a
driver, please contact me.
This is the result of a test application
for CF.
This shows flash memory card's attribute
memory. The string 'SunDisk' can be read.
This application is based on Handspring's
sample code 'SerialDiag'.
This work is done as my hobby, so I don't
manufacture nor sell this adapter now. But
I hope to do so in the future.
Mr. Toyozou for technical advice.
Mr. Taki for checking my english web pages.
Copyright(C) 2000 TTRMKR. All rights reserved.
The content of this web page is provided
"AS IS" without warranty of any
kind.
By attaching your own Springboard to your
Visor may cause damage to theVisor and you
may void its warranty.