Data - Vox WAFER-5820 User Manual

B.2 DMA channel assignments
Channel
0 Available
1 Audio*
2
Floppy disk (8-bit transfer)
3 Parallel**
4
Cascade for DMA controller 1
5 Audio*
6 Available
7
Available
* Audio DMA defaults setting: DMA 1.5
Audio High DMA select: DMA 1.3
Audio Low DMA select: DMA 5.6.7
** parallel port DMA default setting: DMA 3
parallel port DMA select: DMA 1.3
Function
45
B.3 Interrupt assignments
Interrupt #
NMI Parity error detected
IRQ 0 System timer
IRQ 1 Keyboard
IRQ 2 Interrupt from controller 2 (cascade)
IRQ 8 Real-time clock
IRQ 9 Available
IRQ 10 Available
IRQ 11 Available
IRQ 12 PS/2 mouse
IRQ 13 Numeric data processor
IRQ 14 Fixed disk controller
IRQ 15 USB controller
IRQ 3 Available
IRQ 4 Serial communication port 1
IRQ 5 Audio*
IRQ 6 Diskette controller (FDC)
IRQ 7 Parallel port 1 (print port)
* Audio default setting: IRQ5
Ethernet IRQ is automatic set by the system
st
B.4 1 MB memory map
Address
F000h-FFFFh System ROM
D800h-EFFFh Unused
C800h-D7FFh Ethernet ROM*
C000h-C7FFh Expansion ROM*
B800h-BFFFh CGA/EGA/VGA text
B000h-B7FFh Unused
A000h-AFFFh EGA/VGA graphics
0000h-9FFFh Base memory
D000-D400H Available
* Default setting
** If Ethernet boot ROM is enabled.
Interrupt source
Description
46