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Epson Research and Development
Vancouver Design Center
S1D13704
S5U13704B00C Rev. 1.0 ISA Bus Evaluation Board User Manual
X26A-G-005-03
Issue Date: 01/02/12
6 Technical Description
6.1 ISA Bus Support
This board has been designed to support the 16-bit ISA bus environment and can be used
in conjunction with either a VGA or a monochrome display adapter card.
There are 5 configuration inputs associated with the Host Interface (CNF[3:0] and BS#).
Refer to Table 2-3: “Jumper Settings” and Table 5-1: “Host Bus Interface Pin Mapping”
for complete details.
6.1.1 Display Adapter Card Support
When using the S5U13704B00B in conjunction with another primary Display Adapter
(VGA or Monochrome) the following applies:
ISA or VL Bus VGA Display Adapter
When the S5U13704B00B board is used with an ISA or VL Bus VGA display adapter, the
VGA card must have a 16-bit BIOS to prevent conflicts during 16-bit accesses
(MEMCS16#). If an 8-bit VGA adapter card is installed in the system being used, it must
be removed and the screen display routed through a COM port to a terminal display device.
PCI Bus VGA Display Adapter
All PCI based VGA display adapters can be used in conjunction with the S5U13704B00C
board.
Monochrome Display Adapter
All monochrome display adapters can be used in conjunction with the S5U13704B00C
board.
6.1.2 Expanded Memory Manager
If a memory manager is being used for system memory, the address range D0000h to
DFFFFh must be excluded from use as this range is used by the S5U13704B00C.
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