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EPSON Endeavor 486C
VGA Feature Connector (CN14)
System l/O Address Map
VGA Feature Connector Pin Assignments
*Active low logic
DMA Assignments
Level
Assigned device
DMA0
Spare (8-bit)
DMA1
Spare (8-bit)
DMA2
Diskette drive controller (8-bit)
DMA3
Spare (8-bit)
DMA4
DMA5
DMA6
Cascade for DMA controller
Spare (16-bit)
spare (16-bit)
1
DMA7
1
spare (16-bit)
Hardware Interrupts
IRQ no.
IRQ0
IRQ1
IRQ3
IRQ4
Function
Timer output
Keyboard
Serial port 2
Serial port 1
1
IRQ5
1
Available parallel port 2)
I
1
IRQ6
I
FDD controller
IRQ7
IRQ8
1
Parallel port 1
I Real-time clock
IRQ9
IRQ10
IRQ11
IRQ12
IRQ13
IRQ14
IRQ15
Available
Available
Available
PS/2 compatible mouse, optional pointing devices
Math coprocessor
HDD controller
Available
7/15/93
EPSON Endeavor 486C-5