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Turbo PMAC/PMAC2 Software Reference

Turbo PMAC Memory and I/O Map

525

C. S. #

Host

Adr

0x0710

0x0790

0x0810

0x0890

0x0910

0x0990

0x0A10

0x0A90

Address

$0601C4

$0601E4

$060204

$060224

$060244

$060264

$060284

$0602A4

C. S. #

Host

Adr

0x0B10

0x0B90

0x0C10

0x0C90

0x0D10

0x0D90

0x0E10

0x0E90

Address

$0602C4

$0602E4

$060304

$060324

$060344

$060364

$060384

$0603A4

DP:$060xx4-$060xx6

(Reserved for future use)

DPRAM ASCII Buffers (used if I58 = 1)

Y:$0603A7

DPRAM ASCII Command Buffer Control

(0x0E9C)

Bit 0= 1:

Data ready from host

X:$0603A7

DPRAM ASCII Command Buffer Control Character (Bits 0 – 7)

(0x0E9E)
DP:$0603A8-$0603CF

DPRAM ASCII Command Buffer

(0x0EA0 – 0x0F3E)

<= 159 characters, null terminated

Y:$0603D0

DPRAM ASCII Response Buffer Control Characters

(0x0F40)

Bits 0 – 7

Response handshake control character

Bits 8 – 14

Response type (0 = host, 1 = CMDR, 2 = SENDR)

Bit 15

(0 = valid command, 1 = error in command)

X:$0603D0

DPRAM ASCII Response Buffer: No. of characters + 1

(0x0F42)
DP:$0603D1-$060410

DPRAM ASCII Response Buffer

(0x0F44 – 0x1040)

<= 255 characters, null terminated

Background Variable Read and Write Buffer Control (used if I55 = 1)

Y:$060411

Background Variable-Read Control

(0x1044)

Bit 0

(0 = no new data ready; 1 = new data ready)

X:$060411

Background Variable-Read Servo Time (from X:$0)

(0x1046)
Y:$060412

Background Variable-Read Buffer Size

(0x1048)
X:$060412

Background Variable-Read Buffer Start Address Offset

(0x104A)
Y:$060413

Background Variable-Write Buffer Size

(0x104C)
X:$060413

Background Variable-Write Buffer Start Address Offset

(0x104E)