68000 Motherboard User’s Manual
Rev. A
Page 40 of 54
M68K_VMA
!!!
68000 Valid
Memory Address
27
28
M68K_E
68000 Enable (E)
Clock
M68K_VPA
!!!
68000 Valid
Peripheral
Address
29
30
M68K_BERR
!!!!
68000 Bus Error
M68K_ IPL2
!!!!
68000 Interrupt
Priority Level, bit
2
31
32
M68K_ IPL1
!!!!
68000 Interrupt
Priority Level, bit 1
M68K_ IPL0
!!!!
68000 Interrupt
Priority Level, bit
0
33
34
M68K_FC2
68000 Function
Code Output, bit 2
M68K_FC1
68000 Function
Code Output, bit
1
35
36
M68K_FC0
68000 Function
Code Output, bit 0
RDL
!!!
Read Enable,
lower byte
37
38
RDU
!!!
Read Enable, upper
byte
WRL
!!!
Write Enable,
lower byte
39
40
WRU
!!!
Write Enable, upper
byte
CS0
!!!
Block Address 0
Select
41
42
CS1
!!!
Block Address 1
Select
CS2
!!!
Block Address 2
Select
43
44
CS3
!!!
Block Address 3
Select
CS4
!!!
Block Address 4
Select
45
46
CS5
!!!
Block Address 5
Select
CS6
!!!
Block Address 6
Select
47
48
CS7
!!!
Block Address 7
Select
ADDR_DEC_EN
Input to actively
disable
the On-
Board Block
Address Decoder
49
50
STACKEVEN50
Unused
STACKEVEN51
Unused
51
52
STACKEVEN52
Unused
STACKEVEN53
Unused
53
54
STACKEVEN54
Unused
STACKEVEN55
Unused
55
56
STACKEVEN56
Unused
STACKEVEN57
Unused
57
58
STACKEVEN58
Unused
STACKEVEN59
Unused
59
60
STACKEVEN60
Unused
VCC
Supply Positive
61
62
VCC
Supply Positive
GND
Supply Negative
63
64
GND
Supply Negative
Table 20: Stack Connector CON161/CON163 Pin Map
Name
Description
Pin Pin Name
Description
GND
Supply Negative
1
2
GND
Supply Negative
VCC
Supply Positive
3
4
VCC
Supply Positive
STACKODD5
Unused
5
6
M68K_A1
68000 A1
M68K_A2
68000 A2
7
8
M68K_A3
68000 A3
M68K_A4
68000 A4
9
10
M68K_A5
68000 A5
M68K_A6
68000 A6
11
12
M68K_A7
68000 A7
M68K_A8
68000 A8
13
14
M68K_A9
68000 A9
M68K_A10
68000 A10
15
16
M68K_A11
68000 A11
Summary of Contents for MB68k-100
Page 1: ...Rev A Grant K c 2011 ...