
ÉlanSC310 Microcontroller Evaluation Board User’s Manual
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ROMs
The ÉlanSC310 microcontroller evaluation board provides two BIOS ROM
sockets and four application ROM sockets capable of handling up to 256 Kbyte of
BIOS ROM and up to 2 Mbyte of application ROM. The evaluation board supports
BIOS and application ROMs as either Flash or EPROM devices. JP12 must be set
to select either Flash or EPROM devices.
Two BIOS ROM sockets, U59 and U20, are available on the evaluation board.
Each BIOS ROM socket is capable of supporting 128-Kbyte or 256-Kbyte Flash
or EPROM BIOS ROMs. The active BIOS ROM is selectable by JP32.
Four 8-bit application ROM sockets, U16–U19, are provided on the evaluation
board for ROM-based applications such as ROM-DOS. U16 (Even) and U17 (Odd)
make up one logical 16-bit ROM (Low) beginning at offset 0 in application ROM
space. U18 (Even) and U19 (Odd) make up a second logical 16-bit ROM (High)
beginning where U16 and U17 end in application ROM space. These sockets can
be populated with either 256 Kbyte 8-bit Flash, or 256 Kbyte or 512 Kbyte 8-bit
EPROM devices. JP13 selects the size of application ROMs that can be used.
NOTE:
512Kx8 Flash can be supported after a minor board rework. Contact
your local AMD or distributor Field Application Engineer for more information.
JP12
Type of ROM
1-2
Flash
2-3
EPROM
JP32
BIOS ROM Selection
1-2
U59 (Phoenix)
2-3
U20 (SystemSoft)
JP13
Application ROM Size
1-2
256Kx8 (Flash or EPROM)
2-3
512Kx8 (EPROM only)
evalbd.book : ch2 Page 22 Thursday, August 8, 1996 2:34 PM