Reference Manual

PMAC 2 Software Reference
PMAC I/0 and Memory Map 435
Dual-Ported RAM (Option 2 Required)
Note:
Dual-ported RAM addresses are given both as absolute addresses on the PMAC
side (with a $ prefix) and as offsets from the base address on the host-computer
side (with a “0x” prefix). Detailed information on these functions is given in the
manual for the Option 2 DPRAM.
$D000 - $D23F
Dedicated DPRAM functions
DPRAM Control Panel Registers
Address Description
0x0000
(Y:$D000)
Control Panel Motor/Coordinate System Enable Mask
(Set bit to enable; PMAC clears on taking action)
Bit 0: Motor/Coordinate System # 1
Bit 1: Motor/Coordinate System # 2
Bit 2: Motor/Coordinate System # 3
Bit 3: Motor/Coordinate System # 4
Bit 4: Motor/Coordinate System # 5
Bit 5: Motor/Coordinate System # 6
Bit 6: Motor/Coordinate System # 7
Bit 7: Motor/Coordinate System # 8
Bits 8-15: Not Used
0x0002
(X:$D000)
Coordinate System Feed Pot Override Enable Mask
(Set bit to enable, clear bit to disable)
Bit 0: Coordinate System # 1
Bit 1: Coordinate System # 2
Bit 2: Coordinate System # 3
Bit 3: Coordinate System # 4
Bit 4: Coordinate System # 5
Bit 5: Coordinate System # 6
Bit 6: Coordinate System # 7
Bit 7: Coordinate System # 8
Bits 8-15: Not Used
Control Panel Request Words
Motor/C.S. #
1 2 3 4 5 6 7 8
Host Address
0x0004 0x0008 0x000C 0x0010 0x0014 0x0018 0x001C 0x0020
PMAC Addr.
Y:$D001 Y:$D002 Y:$D003 Y:$D004 Y:$D005 Y:$D006 Y:$D007 Y:$D008