PAT16L8
PAT8030
MAGTAPE INTERFACE STROBE GENERATOR         MK84-05-11   **-4205-**

ENA DIR IAC BMS WRT NC  RDS WRS STA GND
DTA DWR CWR DAC BBE BBD DRD SRD VRD VCC



;THIS DEVICE CONVERTS BUS SIGNALS TO APPROPRIATE
;STROBES FOR PORT CONTROL ON 4205.

;SIGNAL NAMES:

;ENA - VALID I/O ACCESS                                ACTIVE LOW
;DIR - BUS DIRECTED TO INTERFACE                          "    "
;IAC - INTERRUPT ACKNOWLEDGE CYCLE                        "   HIGH
;BMS - BUS MASTER CYCLE                                   "   LOW
;WRT - WRITE DATA TO TAPE                               ACTIVE HIGH
;RDS - READ STROBE                                         "   LOW
;WRS - WRITE STROBE                                        "    "
;STA - STATUS/CONTROL REGISTER ACCESS                      "    "
;DTA - DATA REGISTER ACCESS                                "    "

;DWR - DATA REGISTER WRITE STROBE                          "    "
;CWR - CONTROL REG WRITE STROBE                            "    "
;DAC - DATA ACKNOWLEDGE                                    "   HIGH
;BBE - BUS BUFFER ENABLE                                   "   LOW
;BBD - BUS BUFFER DIRECTION TO INTERFACE                   "    "
;DRD - DATA REG READ STROBE                                "    "
;SRD - STATUS REG READ STROBE                              "    "
;VRD - VECTOR RER READ STROBE                              "    "


IF(VCC) /DWR = /ENA*/DTA* DIR*/WRS +
                ENA*/BMS* WRT*/RDS

IF(VCC) /CWR = /ENA*/STA* DIR*/WRS

IF(VCC) /DAC =  ENA*/IAC +
               /ENA* RDS* WRS +
                IAC* RDS

IF(VCC) /BBE = /ENA* DIR +
               /ENA*/DIR*/RDS +
                IAC*/DIR*/RDS +
                ENA*/BMS

IF(VCC) /BBD = /ENA* DIR +
               /BMS* WRT

IF(VCC) /DRD = /ENA*/DTA*/DIR*/RDS +
                ENA*/BMS*/WRT

IF(VCC) /SRD = /ENA*/STA*/DIR*/RDS

IF(VCC) /VRD =  ENA* IAC*/RDS



DESCRIPTION: ALREADY DONE

FUNCTION TABLE:
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;TO BE DEFINED LATER

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