Correction for head gap setting
Interface LSI (Q12: MSM60306)
The MSM60306 is an external interface LSI and controls the following functions.
Interface Control
Controls both the parallel and serial interface functions
Pin 4 of this LSI enables selection of the serial or parallel interface
Address Latch (for lower 8 bits of the master MPU)
MMU (Memory Management Unit) LSI (Q13: MSM73003)
This LSI is connected between the Master and Slave MPUs and performs these functions.
LED Drive Output Port
Master/Slave MPU Interface
Transfers commands and data between the Master and Slave MPUs
Memory Control
Extends the addressable memory by switching banks in/out
Dynamic RAM Refresh
Block Diagram of Microline 393 / 393C-Plus
