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$0000 —
—
$03FF —
—
$1000 —
—
$105F —
—
$BF00 —
—
$BFFF —
—
$FE00 —
$FFC0 —
—
$FFFF —
—
SINGLE
CHIP
MODA = 0
MODB = 1
NOTES:
1. RAM can be remapped to any 1-Kbyte boundary, depending on the value contained in the RAM field in the INIT
register.
2. The register block can be remapped to $0000, $2000, or $3000, depending on the value contained in REG[1:0]
in the INIT register.
4.3 System Initialization Registers
HPRIO — Highest Priority Interrupt and Miscellaneous
Bit 7
RBOOT
SMOD
RESET:
0
0
1
0
MOTOROLA
20
—
—
EXTERNAL
—
—
EXTERNAL
—
—
—
—
EXPANDED
SPECIAL
BOOTSTRAP
MODA = 1
MODA = 0
MODB = 1
MODB = 0
Figure 8 MC68HC11FC0 Memory Map
6
5
4
MDA
IRV
0
0
0
0
1
0
1
0
1
1
1
1
—
—
EXTERNAL
—
—
EXTERNAL
256 BYTES
—
BOOTSTRAP
—
—
—
SPECIAL
TEST
MODA = 1
MODB = 0
3
2
1
PSEL3
PSEL2
PSEL1
0
1
0
0
1
0
0
1
0
0
1
0
1
1024 BYTES RAM
96-BYTE REGISTER FILE
$BFC0
SPECIAL
MODE
ROM
INTERRUPT
VECTORS
$BFFF
$FFC0
NORMAL
MODE
INTERRUPT
VECTORS
$FFFF
$x03C
Bit 0
PSEL0
1
Single-Chip
1
Expanded
1
Bootstrap
1
Special Test
MC68HC11F1/FC0
MC68HC11FTS/D
2
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