IBM 4613 User Manual

SurePOS 100 Technical Reference

Page 68 of 104

x x x x x 0 x x C/D controlled by prt logic
x x x x x 1 x x C/D controlled by ASIC

Control register T
Cash drawer open via ASIC

INDEX 29H:
Write only

D7 D6 D5 D4 D3 D2 D1 D0 Function

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0 0 0 0 0 0 0 1 Pulse C/D circuit

(open drawer)

Control register U

Cash drawer status
INDEX 30H:

Read/write

D7 D6 D5 D4 D3 D2 D1 D0 Function
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x x x x x x 0 x IBM cash drawer connected
x x x x x x 1 x IBM cash drawer not connected

x x x x x 0 x x IBM cash drawer open

x x x x x 1 x x IBM cash drawer closed