MAC 341-0538-A
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Revision as of 11:00, 24 July 2022 by Jon (talk | contribs) (Created page with "== Found on.. == *Macintosh SE == Equations == <pre> pin 1 = CLK; →Unused input: pin 2 = PB6; →Input: pin 3 = IRQ; →Input: pin 4 = WRDA...")
Found on..[edit]
Equations[edit]
pin 1 = CLK; /* Unused input */ pin 2 = PB6; /* Input */ pin 3 = IRQ; /* Input */ pin 4 = WRDATE; /* Input */ pin 5 = ENABLE1; /* Input */ pin 6 = PA4; /* Input */ pin 7 = 16MCLK; /* Input */ pin 8 = PA3; /* Input */ pin 9 = RTXNABLW; /* Input */ pin 11 = OE; /* Input */ pin 12 = RTXCA; /* Combinatorial output */ pin 13 = OUTA; /* Input */ pin 14 = BBUIRQ; /* Fixed low output w/ output enable */ pin 15 = ENABLEL; /* Combinatorial output */ pin 16 = ENABLEU; /* Combinatorial output */ pin 17 = FLOPPYWR; /* Combinatorial output */ pin 18 = NC; /* Unused input */ pin 19 = FCLK; /* Combinatorial output w/ output enable */ !FCLK = 16MCLK; FCLK.oe = !OE; !FLOPPYWR = WRDATE; !ENABLEU = !ENABLE1 & !PA4; !ENABLEL = !ENABLE1 & PA4; BBUIRQ = 'b'0; BBUIRQ.oe = !PB6 & IRQ; !RTXCA = !PA3 & !RTXNABLW & !OUTA # PA3 & !RTXNABLW & !OUTA # !PA3 & RTXNABLW & !OUTA # PA3 & !RTXNABLW & OUTA;