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- PAL16L8
- PAT8037 **-1110-** MK, 84-12-28
- DS60 SASI INTERFACE CONTROL
- DMC MMG DIR A13 A07 ADS BRC HLC REQ GND
- STB BRQ BWR BHE BLE CNT TRE DLY EXC VCC
- ;EQUATIONS:
- IF(VCC) /BRQ = REQ*/BRC*/STB +
- REQ* BRC* STB
- IF(VCC) /BWR = /DMC* DIR*/ADS +
- /MMG*/A13*/A07*/DIR*/ADS +
- REQ* STB*/BRC*/DLY
- IF(VCC) /BHE = /DMC*/ADS +
- /MMG*/A13*/A07*/ADS +
- REQ* STB*/HLC*/BRC*/DLY +
- REQ*/STB*/HLC* BRC
- IF(VCC) /BLE = /DMC*/ADS +
- /MMG*/A13*/A07*/ADS +
- REQ* STB* HLC*/BRC*/DLY +
- REQ*/STB* HLC* BRC
- IF(VCC) /CNT = /DMC +
- /MMG*/A13*/A07 +
- REQ* HLC* DLY
- IF(VCC) /TRE = /DMC*/ADS +
- /MMG*/A13*/A07*/ADS
- IF(VCC) /EXC = REQ*/STB* BRC +
- REQ* STB*/BRC
- FUNCTION TABLE:
- STB BRC MMG A13 A07 DIR ADS DMC HLC REQ DLY
- BRQ BWR BHE BLE CNT TRE EXC
- ;SB MAA DA D HRD B BBB CT E
- ;TR M10 ID M LEL R WHL NR X
- ;BC G37 RS C CQY Q REE TE C
- -----------------------------
- XX XXX XX X XLX H XXX XX H
- LL XXX XX X XHX L XXX XX H
- LH XXX XX X XHX H XXX XX L
- HL XXX XX X XHX H XXX XX L
- HH XXX XX X XHX L XXX XX H
- XX HXX XX H XLX X HHH HH H
- XX LHX XH H XLX X HHH HH H
- XX LLL HL H XLX X HLL LL H
- XX LLL LL H XLX X LLL LL H
- XX HXX HL L XXX X LLL LL X
- XX HXX LL L XXX X HLL LL X
- HL HXX XX H HHL H LHL HH L
- HL HXX XX H LHL H LLH HH L
- LH HXX XX H HHL H HHL HH L
- LH HXX XX H LHL H HLH HH L
- XX HXX XX H HHH X HHX LH X
- -----------------------------
- DESCRIPTION:
- INPUT SIGNALS:
- DMC - DMA CYCLE ACTIVE LOW
- MMG - MASS MEMORY GROUP " "
- DIR - DATA BUS DIRECTION OUT " "
- A13, A07 - CPU ADDRESS BITS
- ADS - ADDRESS STROBE " "
- BRC - BUFFER READY CONTROL FF
- HLC - HIGH/LOW BYTE CONTROL FF
- REQ - SASI REQUEST " HIGH
- STB - SASI TO BUFFER " "
- DLY - ACKNOWLEDGE DELAY " "
- OUTPUT SIGNALS:
- BRQ - BUFFER REQUESTS TRANSFER " LOW
- BWR - " WRITE STROBE " "
- BHE - " HIGH BYTE CE " "
- BLE - " LOW BYTE CE " "
- CNT - ADVANCE BUFFER POINTER " "
- TRE - BUS TRANSCEIVER ENABLE " "
- EXC - EXECUTE CYCLE (REQUEST RESPOND) " "
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