Hardware Description
SYS68K/CPU-30 R4 Technical Reference Manual
Page 74
3.10.11 Summary of
PI/T #1
Device
68230 PI/T
Access Address
FF80.0C00
16
Port Width
Byte
Interrupt Request Level
Software programmable
FGA-002 Interrupt Channel (Timer IRQ)
Local IRQ #2
3.10.12 Address Map
of the PI/T #2
Registers
The PI/T2 is accessible via the 8-bit local I/O bus (byte mode). The
following table shows the register layout of PI/T2.
3.10.13 I/O Configuration
of PI/T #2
The following table lists all I/O signals connected to PI/T #2. The
functions of these signals are described in the corresponding chapter.
SEE ALSO: Additional information is provided in the PI/T data sheet,
included in Section 4, ‘Circuit Schematics and Data Sheets,’ on
page 115.
Table 27: PI/T #2 Register Layout
Default
I/O Base Address:
Offset:
Name:
$FF80 0000
$0000 0E00
PI_T2
Address
(HEX)
Offset
(HEX)
Reset
Value
Label
Description
FF800E00
FF800E01
FF800E02
FF800E03
FF800E04
FF800E05
FF800E06
FF800E07
FF800E08
FF800E09
FF800E0A
FF800E0B
FF800E0C
FF800E0D
FF800E10
FF800E11
FF800E12
FF800E13
FF800E14
FF800E15
FF800E16
FF800E17
FF800E18
FF800E19
FF800E1A
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
10
11
12
13
14
15
16
17
18
19
1A
00
00
00
00
00
00
00
00
--
--
--
--
--
--
00
0F
--
--
--
--
--
--
--
--
00
PIT2 PGCR
PIT2 PSRR
PIT2 PADDR
PIT2 PBDDR
PIT2 PCDDR
PIT2 PIVR
PIT2 PACR
PIT2 PBCR
PIT2 PADR
PIT2 PBDR
PIT2 PAAR
PIT2 PBAR
PIT2 PCDR
PIT2 PSR
PIT2 TCR
PIT2 TIVR
PIT2 CPR
"
"
"
PIT2 CNTR
"
"
"
PIT2 TSR
Port General Control Register
Port Service Request Register
Port A Data Direction Register
Port B Data Direction Register
Port C Data Direction Register
Port Interrupt Vector Register
Port A Control Register
Port B Control Register
Port A Data Register
Port B Data Register
Port A Alternate Register
Port B Alternate Register
Port C Data Register
Port Status Register
Timer Control Register
Timer Interrupt Vector Register
Counter Preload Register
"
"
"
Count Register
"
"
"
Timer Status Register
☞
Содержание SYS68K/CPU-30 R4
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