Xycom AHIP-370, Руководство пользователя

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AHIP-370 Manual
8
Note
The IDE controller supports enhanced PIO modes, which reduce the cy-
cle times for 16-bit data transfers to the hard drive. Check with your
drive manual to see if the drive you are using supports these modes. The
higher the PIO mode, the shorter the cycletime.
Select the PIO modes in the BIOS setup (refer to Chapter 3). The auto-
configure classifies the drive connected if the drive supports the auto ID
command. If you experience problems, change the PIO to standard.
On-board Memory
DRAM
The AHIP-370 has two 168-pin DIMM memory sites, providing up to 256 MB of
SDRAM (with up to 512 MB capability in the future). The memory site is populated
by 100 MHz synchronous DRAM.
Flash BIOS
The AHIP-370 board uses a Flash BIOS. Flash is used for system BIOS and video
BIOS.
Non-volatile SRAM
The AHIP-370 hardware supports non-volatile SRAM. Contact Xycom Automation
at 1-800-AT-XYCOM (1-800-289-9266) for additional information about this fea-
ture.
The SRAM comes in a module type package and contains a built-in battery and bat-
tery backup circuitry. The battery life is approximately seven years in the absence of
VCC. The SRAM supports 32Kx8 and 128Kx8 memory sizes. The RAM comes in a
32 pin dip (0.6 inches wide) standard format.
SRAM can be located at: CC000, D0000, or D8000.
DiskOnChip 2000
The DiskOnChip 2000 is a single-chip Flash disk in a standard 32-pin DIP format.
It requires an 8 Kbyte window to view as an extension BIOS. During boot up, the
DiskOnChip loads its software in the PC’s memory and installs itself as an addi-
tional drive.