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Page 210

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3-12

Computer Group Literature Center Web Site

PCCchip2

3

Table 3-2. PCCchip2 Memory Map - Control and Status Registers

This sheet continues on facing page.

PRTR

FLT

PLTY

PRTR

FLT

E/L*

PRTR

FLT
INT

PRTR

FLT
IEN

PRTR

FLT

ICLR

PRTR FAULT

IRQ LEVEL

PRTR

ACK

PLTY

PRTR

ACK

E/L*

PRTR

ACK

INT

PRTR

ACK

IEN

PRTR

ACK

ICLR

SCC

RTRY

ERR

PCCchip2 Base Address = $FFF42000
OFFSET:

00

04

08

0C

10

14

18

1C

20

24

28

2C

30

34

38

3C

PRTR ACK

IRQ LEVEL

GPI

PLTY

D16

D23

D24

D31

CHIP ID

CHIP REVISION

TIC TIMER 1

TIC TIMER 1

TIC TIMER 2

TIC TIMER 2

PRESCALER COUNT REGISTER

PRESCALER CLOCK ADJUST

GPI

E/L*

GPI
INT

GPI
IEN

GPI

ICLR

GPI

IRQ LEVEL

GPI

GPOE

GPO

SCC
PAR
ERR

SCC

EXT

ERR

SCC

LTO

ERR

SCC

SCLR

SCC

MDM

ERR

SCC

MDM

IEN

SCC

MDM

AVEC

SCC MODEM

IRQ LEVEL

SCC TRANSMIT PIACK

LAN
PAR

ERR

LAN
EXT

ERR

LAN
LTO

ERR

LAN

SCLR

SCSI

PAR
ERR

SCSI

EXT

ERR

SCSI

LTO

ERR

SCSI

SCLR

PRTR

BSY

PLTY

PRTR

BSY
E/L*

PRTR

BSY

INT

PRTR

BSY

IEN

PRTR

BSY

ICLR

PRTR BSY

IRQ LEVEL

CHIP SPEED

SCC PROVIDES ITS OWN VECTORS

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