A0 = DMA_ENA
A1 = BUS_CYC
A2 = M8
A3 = M9
A4 = M12

D0 = CYC_STUT
D1 = not used
D2 = WTBT
D3 = ~OUT_CYC
D4 = DIN_CYC
D5 = BUS_ENA
D6 = CLK_HOLD
D7 = not used

cyc_stut = ~(m[12] & m[9] & m[8] & ~bus_cyc);
wtbt     = ~m[9] & ~m[8];
out_cyc  = ~(m[12] & ~m[9] & bus_cyc);
din_cyc  = m[12] & m[9] & ~m[8] & bus_cyc;
bus_ena  = ~m[12] | ~m[9] & bus_cyc;
clk_hold = ~m[12] & dma_ena | m[12] & bus_cyc & ~(m[9] & m[8]);

00: 257	10101111
01: 357 11101111
02: 257 10101111
03: 357 11101111
04: 253 10101011
05: 353 11101011
06: 253 10101011
07: 353 11101011
08: 253 10101011
09: 353 11101011
0A: 253 10101011
0B: 353 11101011
0C: 253 10101011
0D: 353 11101011
0E: 253 10101011
0F: 353 11101011
10: 217 10001111
11: 217 10001111
12: 347 11100111
13: 347 11100111
14: 213 10001011
15: 213 10001011
16: 343 11100011
17: 343 11100011
18: 213 10001011
19: 213 10001011
1A: 333 11011011
1B: 333 11011011
1C: 212 10001010
1D: 212 10001010
1E: 213 10001011
1F: 213 10001011