Appendix B System Connectors B-13
B.14 SBus Connector (Internal)
FIGURE B-15 SBus Connector
14 N/C 31 Ground
15 Ground 32 hd select
16 motor 33 Ground
17 Ground 34 disk change
TABLE B-13 Pinout for SBus Connector
Pin Description Pin Description Pin Description Pin Description
1 Ground 25 sb_d(31) 49 sb_clk 73 sb_d(30)
2 sb_br* 26 sb_siz(0) 50 sb_bg* 74 sb_siz(1)
3 sb_sel* 27 sb_siz(2) 51 sb_as* 75 sb_rd
4 sb_irq1* 28 sb_irq7* 52 Ground 76 Ground
5 sb_d(0) 29 sb_a(0) 53 sb_d(1) 77 sb_a(1)
6 sb_d(2) 30 sb_a(2) 54 sb_d(3) 78 sb_a(3)
7 sb_d(4) 31 sb_a(4) 55 sb_d(5) 79 sb_a(5)
8 sb_irq2* 32 sb_merr* 56 +5 VDC 80 +5 VDC
9 sb_d(6) 33 sb_a(6) 57 sb_d(7) 81 sb_a(7)
10 sb_d(8) 34 sb_a(8) 58 sb_d(9) 82 sb_a(9)
11 sb_d(10) 35 sb_a(10) 59 sb_d(11) 83 sb_a(11)
12 sb_irq3* 36 sb_err* 60 Ground 84 Ground
13 sb_d(12) 37 sb_pa(12) 61 sb_d(13) 85 sb_pa(13)
14 sb_d(14) 38 sb_pa(14) 62 sb_d(15) 86 sb_pa(15)
15 sb_d(16) 39 sb_pa(16) 63 sb_d(17) 87 sb_pa(17)
TABLE B-12 Pinout for Diskette Drive Connector (Continued)
Pin Description Pin Description
96
95
2
1
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