The PLA contents of the 8085

This page lists the contents of the 8085 PLA. For the full explanation, see my article Notes on the PLA on the 8085 chip.

The transistors in the PLA

The following diagrams show where the transistors are in each PLA grid.

Plane A

.**..**.*...*.*...
.....*.........**.
*.*..*.......**...
.*.**...*.*..*.*..
*.*..*.......*.*..
*.*..*......*.*...
*.*.*...*...*..*..
.**..*.*.*.**.*...
.**.*.*.*.*..*.*..
.**.*.*.*..*.*.*..
.*.*.**..*.**.*...
*..*.*.**..**.*...
.**.*..**.*..*.*..
.**.*..**..*.*.*..
*.*.*........*.*.*
.**..**..*.**.*...
*.*.*.*.*.*..*.*..
.**..**..**.*.*...
.*.*.*.*.*.**.*...
.*.*.*.......**...
.*.**......**..*..
.*.**..*.*.*.*.*..
.*.**.*..*.*.*.*..
.*.**...*..*.*.*..
.*.**.*..**..*.*..
*.*.*....*..*..*..
*..*.*....*.*.*...
.*.*.*....*.*.*...
.*.*.**.*..**.*...
.**..*.......**...
.**..*.*.**.*.*...
*..*.**....**.*...
.*.*.*.**..**.*...
*..*.*.......**...
*..*.*.*.*.**.*...
.**..*.**.*.*.*...
.**.*.....*.*..*..
.**.*......**..*..
*..**..........*.*
*..**.*.*.*....*..
.**.*....**..*.*..
.**.*....*.*.*.*..
.*.**.....*.*..*..
....*.*.*.*...*.*.
*.*.*........**..*
....*.........*.**
.**..*.**..**.*...
*.*.*.*.*.*..**...

Plane B

......
......
....**
......
....**
*.**..
......
*.**..
.....*
.....*
*..*..
....*.
...*..
...*..
....**
.*...*
.*...*
.*...*
....*.
..*.*.
....*.
....*.
....*.
....*.
....**
......
*.**..
....*.
..*...
....*.
....*.
....*.
..*...
..**..
..**..
...*..
..*...
..*...
......
.*...*
*....*
....**
....*.
*....*
....**
......
......
......

Plane C

.....*..............*.*............*.*.......*...*.
......................*............*.*.....*.*.....
............*....*..*..............................
..............*.......*............*.*.......*.....
..................*..........*...*..........*.*....
.....*...........*..*.......*....................*.
.*................*..........*...*............*....
...........*............*.................**.......
....*............*......*.................**.......
..............................*.*.....*............
.........................*.*..*....................
........................*.......*.....*...**.......
....*........*..........***.....*.........**.......
...........................*...........*...*.......
....*...*........*......*.................**.......
.........*......*.........................**.......
........*..*............*.................**.......
.......*................*...................*......
.*.....*................*........*.................
*..*.................**..*......*.*.......**......*
...*...........*......*..*......*.**......**......*
...*......*..........**..*........*.......**.......
*..*......*..............*................**.......
..*...................**..........*........*.......
.....*...........*..***..............*..........**.
..................**.............*............*....
.......*...................*...........*...........
..............*................................*...
.*......................*.................**.......
........................*.................***......
.*......................*.................**.......
..............*................*...................
.*...........*....*......................**...*....
.............*....*......................**.*.*....
.......*.....*....*.*..*........*.............*....
*...................................*..............
*...................................*.........*....
.....**.............*......*.......*...*...........
......*..*....*.*..................*...............
...........*........................*..............
.................*..................*..............
*........................*.*..............**.......
..............*....*.............................*.
..............*............*...........*...........
.....*..............*......*...........*.........*.
........................................*..........

Plane D

*...*..*.....****.*.***....*...*..*....**............
..*..................................................
.*.........*...*.......****.....*...**...............
..*...................................*..............
......................................*..............
**..*..*.....**.*.*.********...*..*.**.**............
.*.....*....*.*.......******.........*.*............*
.............*....*.*................................
...............*.....*...............................
....*...........................*..*.................
*..*.......*....*.................*.*...*............
..........................***..***..........**....*..
...........**........*..................******.......
..............*......*...*....*.........***..**......
........*............................................
..........................****.............**...*..*.
..........*...................................***....

Plane E

*.......*.**...***.........*...*.........................
....***..*........*.......................*..............
.......................**....*...*.*.........*...........
......................*.....................*......*..*..
.*.....*....*...............*.*.*.............**.........
*....***....*..****...**....*.***..*........****......*..
...*..................................*.*............*...
...*................**...............**..*.*........**.*.
.*...*..*..*...***......*...**.***.*......*...*..........
....................*................*..*..............*.
**..*.**...**.....*...***..*.**..*........*.**.*...*..*..
..*......................................................
.........................*...............................
...................*..............*......................
..........................*.........*..*.................
..............*...................................*......
.............*...................................*.......
................................................*........
........................................................*

Plane F

......*..............................................
...*...............................*.................
**.....*.....***..*.*...........*....................
....*..........................*....*................
.......................................*.............
..*.........*........................................
**.............*..*.............*....................
...................*.....................*.****.*....
...........................*.........................
........*............................................
.......................*..*.....*....*...............
.................................*...............*...
................*.........*..........*...............
........................................*............
....................................................*
..*..................*...............................
................................*....................
.........*.......*...............*........*.*.*..*...
.................................*..........*....*...
...........**......................................*.
..........*.*..................................*..*.*
.....*...*..................*.............***.*.*.*..
.....*...*..................*.............*...*.*.*..
......................*..............................
.................*...........*............*...*......
......................................*..............
........................**.*....*.*..................
.................*.......*................*.*.*......
...........**.................*......................

Plane G

......*.*.............*.....................*............
...*.....................................................
............*.........................................*..
.........*.............*......*............*.............
.............................................*...........
*..............*............*....*.*.....................
.....*..................*......**........................
.............**..........*..............*............*...
...........**....**.......*.......*......**..............
...................*.................*...................
.*..................................*.*........***.......
.....***........*...*.......**...*.....*................*
..*...............................................*......
.......................................................*.
..............................................*..........
....*....................................................
.....................*.....*.............................
...................................................**....
.....*....*..............................*...............

Author: Ken Shirriff