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MC68302PV20 Datasheet(PDF) 32 Page - Motorola, Inc |
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MC68302PV20 Datasheet(HTML) 32 Page - Motorola, Inc |
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32 / 480 page 
MC68000/MC68008 Core 2-2 MC68302 USER’S MANUAL MOTOROLA Figure 2-1. M68000 Programming Model The supervisor's programming model includes supplementary registers, including the su- pervisor stack pointer (SSP) and the status register (SR) as shown in Figure 2-2. The SR contains the interrupt mask (eight levels available) as well as the following condition codes: overflow (V), zero (Z), negative (N), carry (C), and extend (X). Additional status bits indicate that the processor is in trace (T) mode and/or in a supervisor (S) state. A1 A0 A2 A3 A4 A5 A6 A7 (USP) D0 D1 D2 D3 D4 D5 D6 D7 CCR PC USER STACK POINTER PROGRAM COUNTER CONDITION CODE REGISTER A7' (SSP) SR SUPERVISOR STACK POINTER STATUS REGISTER DATA REGISTERS ADDRESS REGISTERS USER MODE SUPERVISOR MODE 31 0 CCR 0 15 15 0 31 0 0 0 7 31 31 87 16 15 31 0 16 15 8 7 |
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