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The PCM-4330 board can optionally be fitted with a 28F016SV (2MB) or 28F032SV
(4 MB) flash module to provide a silicon disk, Data, programs, or operating soft-
ware can be permanently stored on this disk. Data is accessed in16 kB banks that are
paged into the address space of the processor.128 kB from the available memory
space of the flash module is used for the System-BIOS.
The Western Digital WD90C24 video controller can address various monochrome
or fiat panel displays directly, as well as all SVGA monitors. Depending on the
LCD display connected, an additional CRT display may be used simultaneously.
The WD90C24 offers accelerated display of windows via integrated hardware func-
tions (such as Bit Block Transfer). Frame buffers and font-caching are also sup-
ported.
The 1 MB video memory on the VGA controller is addressed directly via a 32 bit
wide interface from the video controller. The size of the video memory allows for a
resolution of 1024 x 768 pixels (256 colors) on LED and CRT displays.
A 64 kB segment at address F000h is reserved for the Award ROM-B IO S. All
AT03-compatible traps are included in this address space.
The Western Digital VGA-BIOS for the WD90C24 video controller uses 48 kB
in the physical address space of the computer, starting at segment C000h. All VGA-
, SVGA- and VESA-compatible video traps are supported by the BIOS.
The memory area is fitted with a 29F010 (128 kB), 29F020 (256 kB), or 29F040
(512 kB) Flash-Memory. Alternatively, the board can be equipped with a28F0xGSV
(1 MB) or 28F032SV (4 MB) module to provide memory space for the BIOS and a
silicon disk.
The PCM-4330 board includes the most important interfaces on-board. Two serial
and one parallel port, keyboard, floppy disk and an IDE hard disk controller are
included and can be configured by software. A SVGA connector is available, as
well as a connector for monochrome or color LC-display. The PCM-4330 single
board computer features an expansion slot according to the PC/104 norm.
The board is fully XT/AT-compatible. All available expansion cards complying
with the PC/104 norm can be used with the PCM-4330.
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