6 GAL EQUATIONS
Two PALCE16V8 are used. The first (U1) is responsible for the reset logic and auxiliary options, and the second (U2), for the memory decode logic. Refer to the circuit diagrams for more information.
6.1Default GAL Equations
6.1.1 U1 Equations
;U1 Bootstrap Loader Logic |
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| PIN Declarations | |||
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PIN | 1 |
| A18 | COMBINATORIAL ; |
PIN | 2 |
| A19 | COMBINATORIAL ; |
PIN | 3 |
| A20 | COMBINATORIAL ; |
PIN | 4 |
| A21 | COMBINATORIAL ; |
PIN | 5 |
| A22 | COMBINATORIAL ; |
PIN | 6 |
| A23 | COMBINATORIAL ; |
PIN | 7 |
| RSTIN_ | COMBINATORIAL ; |
PIN | 8 |
| RSTOUT_ | COMBINATORIAL ; |
PIN | 9 |
| CFG0 | COMBINATORIAL ; |
PIN 11 |
| CFG1 | COMBINATORIAL ; | |
; |
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PIN | 12 |
| HISEG | COMBINATORIAL ; |
PIN | 13 |
| RSTCYC | COMBINATORIAL ; |
PIN | 14 |
| RSTCYC_ | COMBINATORIAL ; |
PIN | 15 |
| AUX0 | COMBINATORIAL ; |
PIN | 16 |
| AUX1 | COMBINATORIAL ; |
PIN | 17 |
| DUMMY | COMBINATORIAL ; |
PIN | 18 |
| LEDRST_ | COMBINATORIAL ; |
PIN | 19 |
| LEDAUX_ | COMBINATORIAL ; |
EQUATIONS |
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RSTCYC | = | /( RSTIN_ * RSTCYC_ ) | ||
RSTCYC_ | = | /( /RSTOUT_ * RSTCYC | ) | |
HISEG | = A18 * A19 * A20 * A21 * A22 * A23 | |
AUX0 | = | 1 |
AUX1 | = | 1 |
DUMMY | = | 1 |
LEDRST_ | = | RSTCYC |
LEDAUX_ | = | RSTCYC_ |
