Mark Wickens

DEFSET

Purpose

Specifies segment base address.

Format

DEFSEG    segment address
          └──────┬──────┘
         Numeric expression

Example

DEFSEG = 16

Parameters

segment address: integer within the range of -32768 segment < 65536

Explanation

1. Specifies the segment base address for use with the PEEK and POKE commands. The relationship between the address (offset address) and the segment address within the PEEK and POKE format is as follows: actual address = segment address * 16 + offset address
2. The initial specification for DEFSEG is 0 whenever power is switched ON,
3. or the P button or ALL RESET button is pressed.

See

• PEEK
• POKE

Sample Program

10  DEFSEG = &H1000
20  A = PEEK(&H00F0)

In this case, the value assigned to A is that contained in address 100F0ʰ.