PAL16R4 PAT8034 **-1110-** MK,84-11-16 DS60 CIO, SCC, FDC AND BOOTPROM CONTROLLER CLK RST LDS DIR INT ECK SCC CIO DLY GND OE ZRD ZWR PCK ZIA BA0 CFF DTA FDC VCC ;EQUATIONS: IF(VCC) /ZRD = DIR*/SCC*/LDS* DLY + ;SCC RD DIR*/CIO*/LDS + ;CIO RD DIR*/FDC*/LDS + ;FDC RD /INT*/LDS*/BA0 + ;INTACK OR BOOT /RST IF(VCC) /ZWR =/DIR*/SCC*/LDS* DLY* BA0 + ;SCC WR1 /DIR*/SCC*/LDS* DLY*/CFF + ;SCC WR2 /DIR*/CIO*/LDS* BA0 + ;CIO WR1 /DIR*/CIO*/LDS*/CFF + ;CIO WR2 /DIR*/FDC*/LDS* BA0 + ;FDC WR1 /DIR*/FDC*/LDS*/CFF + ;FDC WR2 /RST /PCK :=/RST*/LDS + ;TEST SETUP PCK* ECK + /PCK*/ECK /ZIA := RST* ZIA*/INT*/LDS*/PCK* ECK + ;INTACK OR BOOT RST*/ZIA*/LDS + ;KEEP TO EOC RST*/ZIA*/ECK ;EXTEND /CFF := RST* CFF*/SCC*/LDS* DLY* BA0*/PCK* ECK + ;SCC ACC RST* CFF*/CIO*/LDS* BA0*/PCK* ECK + ;CIO ACC RST* CFF*/FDC*/LDS* BA0*/PCK* ECK + ;FDC ACC RST* CFF*/ZIA* BA0*/PCK* ECK + ;INTACK OR BOOT RST*/CFF* BA0 + ;KEEP TO BA0 RST*/CFF*/ECK ;EXTEND /BA0 := RST* BA0*/ZIA*/CFF*/PCK* ECK + ;AT INTACK OR BOOT RST* BA0* ZIA* FDC*/CFF* PCK* ECK + ;AT SCC OR CIO RST* BA0* ZIA*/FDC*/CFF*/PCK* ECK + ;AT FDC RST*/BA0*/LDS + ;KEEP TO EOC RST*/BA0*/ECK ;EXTEND IF(/BA0)/DTA =/LDS*/ZIA*/BA0* CFF + ;INTACK OR BOOT /LDS* ZIA FUNCTION TABLE: CLK OE RST DIR LDS INT CIO SCC FDC DLY ECK PCK ZIA ZRD ZWR CFF BA0 DTA ------------------------------- ;C R DL ICSF D E P Z ZZ CB D ;LOS ID NICD L C C I RW FA T ;KET RS TOCC Y K K A DR F0 A ;------------------------------INITIALIZE CLL HL HHHH X L X X XX XX X CLL HL HHHH X H L H LL HH Z CLL HH HHHH X L L H LL HH Z CLL HH HHHH X H H H LL HH Z CLH HH HHHH X L H H HH HH Z CLH HH HHHH X H L H HH HH Z CLH HH HHHH X L L H HH HH Z ;------------------------------INTACK SEQUENCE CLH XX HHHH X H H H HH HH Z CLH XL XHHH X L H H HH HH Z CLH XL LHHH X H L H HH HH Z ;10 CLH XL LHHH X L L H HH HH Z CLH XL LHHH X H H L HH HH Z CLH XL LHHH X L H L HH HH Z CLH XL LHHH X H L L HH HH Z CLH XL LHHH X L L L HH HH Z CLH XL LHHH X H H L HH LH Z CLH XL LHHH X L H L HH LH Z CLH XL LHHH X H L L HH LH Z CLH XL LHHH X L L L HH LH Z CLH XL LHHH X H H L LH LL H ;20 CLH XL LHHH X L H L LH LL H CLH XL LHHH X H L L LH HL L CLH XL LHHH X L L L LH HL L CLH XL LHHH X H H L LH HL L CLH XL LHHH X L H L LH HL L CLH XL LHHH X H L L LH HL L CLH XX XHHH X L L L XH HL X CLH XH HHHH X H H H HH HH Z CLH XH HHHH X L H H HH HH Z ;------------------------------CIO READ SEQUENCE CLH HX HHHH X H L H HH HH Z ;30 CLH HL HXHH X L L H XH HH Z CLH HL HLHH X H H H LH LH Z CLH HL HLHH X L H H LH LH Z CLH HL HLHH X H L H LH LL L CLH HL HLHH X L L H LH LL L CLH HL HLHH X H H H LH HL L CLH HL HLHH X L H H LH HL L CLH HL HLHH X H L H LH HL L CLH HX HXHH X L L H XH HL X CLH HH HHHH X H H H HH HH Z ;40 CLH HH HHHH X L H H HH HH Z ;------------------------------CIO WRITE SEQUENCE CLH LX HHHH X H L H HH HH Z CLH LL HXHH X L L H HX HH Z CLH LL HLHH X H H H HL LH Z CLH LL HLHH X L H H HL LH Z CLH LL HLHH X H L H HL LL L CLH LL HLHH X L L H HL LL L CLH LL HLHH X H H H HH HL L CLH LL HLHH X L H H HH HL L CLH LL HLHH X H L H HH HL L ;50 CLH LX HXHH X L L H XH HL X CLH XH HHHH X H H H HH HH Z CLH HH HHHH X L H H HH HH Z ;------------------------------SCC READ SEQUENCE CLH HX HHHH L H L H HH HH Z CLH HL HHXH L L L H HH HH Z CLH HL HHLH L H H H HH HH Z CLH HL HHLH L L H H HH HH Z CLH HL HHLH L H L H HH HH Z CLH HL HHLH L L L H HH HH Z CLH HL HHLH H H H H LH LH Z ;60 CLH HL HHLH H L H H LH LH Z CLH HL HHLH H H L H LH LL L CLH HL HHLH H L L H LH LL L CLH HL HHLH H H H H LH HL L CLH HL HHLH H L H H LH HL L CLH HL HHLH H H L H LH HL L CLH HX HHXH H L L H XH HL X CLH HH HHHH H H H H HH HH Z CLH HH HHHH H L H H HH HH Z ;------------------------------SCC WRITE SEQUENCE CLH LX HHHH L H L H HH HH Z ;70 CLH LL HHLH L L L H HH HH Z CLH LL HHLH L H H H HH HH Z CLH LL HHLH L L H H HH HH Z CLH LL HHLH L H L H HH HH Z CLH LL HHLH L L L H HH HH Z CLH LL HHLH H H H H HL LH Z CLH LL HHLH H L H H HL LH Z CLH LL HHLH H H L H HL LL L CLH LL HHLH H L L H HL LL L CLH LL HHLH H H H H HH HL L ;80 CLH LL HHLH H L H H HH HL L CLH LL HHLH H H L H HH HL L CLH LX HHLH H L L H HH HL X CLH HH HHHH H H H H HH HH Z CLH HH HHHH H L H H HH HH Z ;------------------------------FDC READ SEQUENCE CLH HX HHHH X H L H HH HH Z CLH HL HHHX X L L H XH HH Z CLH HL HHHL X H H H LH LH Z CLH HL HHHL X L H H LH LH Z CLH HL HHHL X H L H LH LH Z ;90 CLH HL HHHL X L L H LH LH Z CLH HL HHHL X H H H LH LL L CLH HL HHHL X L H H LH LL L CLH HL HHHL X H L H LH HL L CLH HL HHHL X L L H LH HL L CLH HL HHHL X H H H LH HL L CLH HX HHHX X L H H XH HL X CLH HH HHHH X H L H HH HH Z CLH HH HHHH X L L H HH HH Z ;------------------------------FDC WRITE SEQUENCE CLH LX HHHH X H H H HH HH Z ;100 CLH LL HHHX X L H H HX HH Z CLH LL HHHL X H L H HL HH Z CLH LL HHHX X L L H HL HH Z CLH LL HHHL X H H H HL LH Z CLH LL HHHL X L H H HL LH Z CLH LL HHHL X H L H HL LH Z CLH LL HHHL X L L H HL LH Z CLH LL HHHL X H H H HL LL L CLH LL HHHL X L H H HL LL L CLH LL HHHL X H L H HH HL L ;110 CLH LL HHHL X L L H HH HL L CLH LL HHHL X H H H HH HL L CLH LX HHHX X L H H HH HL X CLH XH HHHH X H L H HH HH Z CLH HH HHHH X L L H HH HH Z ------------------------------- DESCRIPTION: THIS DEVICE GENERATES CONTROL SIGNALS FOR Z8536 CIO, Z8530 SCC, STROBES FOR WD1797 FDC, ADDRESS BIT 0 FOR BOOTSTRAP PROM AND DTACK SIGNAL FOR CPU INPUT SIGNALS: RST - RESET ACTIVE LOW LDS - LOW DATA STROBE " " DIR - DIRECTION WRITE " " ECK - EARLY CLOCK INT - INTERRUPT OR BOOTPROM CYCLE " " SCC - SCC ACCESS " " CIO - CIO ACCESS " " FDC - FDC ACCESS " " DLY - SCC'S RECOVERY TIME " " OUTPUT SIGNALS: ZRD - SCC,FDC OR CIO READ STROBE " " ZWR - " " " WRITE " " " PCK - SCC AND CIO PCLK ZIA - INTACK SIGNAL " " BA0 - BOOTPROM ADDRESS BIT 0 CFF - CONTROL FLIP-FLOP DTA - DTACK TO CPU " "