int e l CHAPTER 11 Reset Options (Version 1.1 Only) Version 1.1 of MCS BASIC-52 contains numerous RESET options that were not available in Version 1.0. They are discussed in detail in chapters 3.2 through 3.5 of this manual. Briefly, they are as follows: PROG1 Saves only the serial port baud rate for a power-up or RESET condition. PROG2 Saves the serial port baud rate and automatically runs the first program that is saved in EPROM on a power-up or RESET condition. PROG3 Saves the serial port baud rate plus the assigned MTOP value. If RAM is available beyond the assigned MTOP value, it will not be cleared during a power-up or RESET condition.
PROG4 Saves the serial port baud rate plus the assigned MTOP value, just like PROG3, but also automatically runs the first program that is saved in EPROM on a power-up or RESET condition. PROG5 Does the same thing as PROG4, however, if external memory location 5FH contains the character 0A5H on a power-up or RESET condition, external memory will not be cleared. This mode assumes that the user has employed some type of memory back-up. - 145 -