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68000 Motherboard User's Manual
Table 4: Initialization Example with Assembly Language
+Offset Op Code
...
+00
2E7C
00004000
+06
207C
00003C00
+0C
4E60
+0E
46FC
0000
+12
13FC
00FE
000A0000
...
Instruction
Source Operand
Mnemonic
MOVEA.L
#(ONBD_BANK0+
ONBD_BANK0_SZ),
MOVEA.L
#(ONBD_BANK0+
ONBD_BANK0_SZ-
ONBD_SUPSTCK_SZ),
MOVE.L
A0,
MOVE.W
#$0000,
MOVE.B
#$FE,
Page 12 of 54
Rev. A
Destination
Comment
Operand
A7
;
supervisor
stack
top of on-
board
SRAM
A0
;
stack next
in
USP
board
SRAM
SR
;
user mode
and set up
interrupt
mask for
level 0
ONBD_INTEN ;
interrupts
in
hardware
at
user
on-
enter
enable
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