Unit 3: Interface Specifications
GL4xxe Service Manual
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nData Available / nPeripheral Request. Driven by the printer. Indicates the printer has encountered an error.
(Data bits 1 and 5 in Nibble Mode.) 1284 Active / nAStrobe. Driven by the host. A peripheral device is selected.
Host Logic High. Driven by the host. When set to high, the host indicates all of its signals are in a valid state.
When set to low, the host indicates its power is off or its signals are in an invalid state.
nInit. Resets init interface from the host.
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