Z80 Datasheet, PDF (14/330 Pages) Zilog, Inc. – Z80 CPU PERIPHERALS

Z80 CPU Peripherals
User Manual
xiv
Serial Input/Output (continued)
Figure 124. Read Register 2 (Channel B Only) . . . . . . . . . . . . . . . . . 301
Figure 125. Synchronous/Asynchronous Processor-to-Processor Commu-
nication (Direct Wire to Remote Locations) . . . . . . . . . . 302
Figure 126. Synchronous/Asynchronous Processor-to-Processor
Communication (Using Telephone Line) . . . . . . . . . . . . 302
Figure 127. Data Concentrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Figure 128. Read Cycle Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Figure 129. Write Cycle Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
Figure 130. Interrupt Acknowledge Cycle Timing . . . . . . . . . . . . . . . 307
Figure 131. Return from Interrupt Cycle Timing . . . . . . . . . . . . . . . . 308
Figure 132. Typical Interrupt Service . . . . . . . . . . . . . . . . . . . . . . . . . 309
UM008101-0601
List of Figures