Octagon PC-500, User Manual

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Overview PC-500 user’s manual
DRAM and DIMM modules from Octagon meet the full PC-500 tem-
perature range. Customers who need a 0° to 70°C range can install
commercially available DIMM modules onto the PC-500.
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1 MB EDO surface mount standard
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16 MB EDO surface mount optional
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SO-DIMM socket installed standard
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SO-DIMM socket not installed optional
Solid-state disks
SSD0
A 32-pin DIP socket accepts either a 5V flash, SRAM, or 512 KB/1 MB
EPROM. The socket exhibits high retention force and affords a gas
tight contact. SSD0 optionally contains the BIOS drive and ROM-DOS
6.22 in ROM. By default, the optional SSD0 contains a 192 KB backup
BIOS with a 320 KB or a 512 KB drive area. Flash file system software
is included which allows the SSDs to emulate hard disk operation.
SSD0 options include:
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SSD0 socket installed standard
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SSD0 socket not installed optional
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SSD0 socket/EPROM installed optional
For information on changing the device type, refer to the W5 SSD0
table in the Quick start chapter. You can also install compatible
PROMs into SSD0 through the supplied utility programs found on the
PC-500 utility disk. You can format the flash while in the socket.
EPROM usage, however, requires off-card programming from either a
master flash or a master EPROM.
SSD0 also supports a battery back up voltage. The PC-500 is capable of
supplying a battery voltage to SSD0 with SRAM installed.
SSD1
SSD1 is used for storage of the applications program. A standard 2 MB
5V flash is soldered on-card. The flash programmer is built-in which
allows on-card programming of the device. The PC-500 includes flash
file system software, which permits the SSDs to emulate hard disk
operation. Automatic “wear leveling” ensures that no single section of a
chip will reach its life span (100,000 times), while other sections will
scarcely be used. A 1 MB device reserves 192 KB for BIOS and 832 KB
for a drive area, a 2 MB device reserves 192 KB for BIOS and 1856 KB
for a drive area.
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2 MB EPROM standard
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1 MB EPROM optional
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SSD1 not installed optional