
5
AC
TIMING
DIAGRAMS
.............................................................................................................. 223
CAPACITIVE LOADING
......................................................................................................... 223
IOW Timing Port 92
................................................................................................................ 224
POWER-UP TIMING
................................................................................................................ 225
Button Timing
.......................................................................................................................... 226
ROM INTERFACE
.................................................................................................................... 227
ISA WRITE
................................................................................................................................ 228
ISA READ
.................................................................................................................................. 229
8042 CPU
.................................................................................................................................. 231
CLOCK TIMING
........................................................................................................................ 232
Burst Transfer DMA Timing
................................................................................................. 235
DISK DRIVE TIMING
............................................................................................................... 237
SERIAL PORT
.......................................................................................................................... 238
Parallel Port
.............................................................................................................................. 239
EPP 1.9 Data or Address Write Cycle
................................................................................ 240
EPP 1.9 Data or Address Read Cycle
................................................................................ 242
EPP 1.7 Data Or Address Write Cycle
............................................................................... 244
EPP 1.7 Data or Address Read Cycle
................................................................................ 246
ECP PARALLEL PORT TIMING
........................................................................................... 249
Serial Port Infrared Timing
................................................................................................... 254