IBM XT 5160 Technical Reference page 57

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DClK (SH.4)
RDYTODMA (SH.4)
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DMAWAIT'
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HOLDA (SH.4)
RESETDRV' (SH.9,10)
RESETDRV (SH.l0,11)
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(SH.l) RESET
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64/256K System Board (Sheet 2 of 11 )