
ÉlanSC310 Microcontroller Evaluation Board User’s Manual
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1.
0
JP13:
This jumper must be set to 1-2 to indicate 256Kx8 parts are in the
application sockets. (JP13=2-3 indicates 512Kx8 parts, and 512Kx8
Flash is only supported after a minor board rework. Contact your
local AMD or distributor Field Application Engineer for details.)
Initialization Example for Flash Programming
1. Set up PGP0 for I/O address 100h:
Elan Index 91H = 3Eh ;sets up PGP0 to be gated with
I/O write, keep settings for PGP1 and 2
Elan Index 89H = 20h ;set up PGP0 to respond to addresses
100-107.
Elan Index 70H = 40h; ;set up PGP0 as an output. Do a read,
modify, write, setting bit 6.
2. Enable writes to BIOS and application ROM:
Elan Index 62H = 70 ;set bits 6,5 = 1. Note: bit 4 = 1
assuming 33Mhz operation.
3. Enable 16-bit interface to application ROM:
Elan Index 51H = 02h ;bit 1 =1, indicates 16-bit
application ROM size.
Evaluation Board’s Memory Map
Because the ÉlanSC310 microcontroller and the evaluation board are so
configurable, there is not one single memory map that covers all cases. What is
illustrated here is a typical memory map for the evaluation board configured in
Full ISA mode with a Trident VGA ISA card, ROM-DOS kernel, and 2 Mbyte
DRAM.
evalbd.book : ch4 Page 7 Thursday, August 8, 1996 2:34 PM