Commodore Amiga A500 - Page 118

AMlGA MEMORY MAP:
Amiga Interface
Offset Address AT Address Range Size Usage
kind
of
access
24000 ... 2FFFF
30000 ... 37FFF
38000 . . . 3BFFF
3C000 . . . 3DFFF
3E000 . . . 3FFFF
40000 . . . 4FFFF
40000 . . . 43FFF
44000 . . . 4FFFF
50000 ... 57FFF
58000 . . . SBFFF
SC000 . . . SDFFF
SE000
... SFFFF
7E000 . . . 7FFFF
D4000 . . . DFFFF 48K
B8000
... BFFFF 32K
D0000
. . . D3FFF 16K
B0000
. . . BlFFF 8K
0000 . . . 03FF 1 K
A0000
. . . AFFFF 64 K
CAN NOT BE ACCESSED BY THE AT
D4000
. . . DFFFF 48K
B8000
. . . BFFFF 32 K
D0000
. . . D3FFF 16K
B0000
. . . BlFFF 8K
0000 03FF 1 K
0000 03FF 1 K
PCIAT I10 REGISTER MAP
PClAT 110
Address Usage
DlSK BUFFER RAM (*)
COLOR VIDEO RAM
PARAMETER RAM
MONO VIDEO RAM
10-PAGE
DlSK BUFFER RAM
(*)
DlSK BUFFER (*)
COLOR VIDEO RAM
PARAMETER RAM
MONO VIDEO RAM
10-PAGE
10-PAGE
Offset Address
INTERFACE
1 AMlCA
KEYBOARD DATA
SYSTEM REGISTER
SYSTEM STATUS
COM2 TRANSMIT DATA
" RECEIVE DATA
" RESET IRQ3-b
" INTERRUPT CONTROL
" INTERRUPT CONTROL
' DIVISOR LATCH (LSB)
" RESETIRQ3-b
" DIVISOR LATCH (MSB)
COM2 INTERRUPT ACKN
DUMMY
" LlNE CONTROL
DUMMY
" MODEM CONTROL
DUMMY
" LlNE STATUS
DUMMY
" MODEM STATUS
DUMMY
DUMMY
LPTl PRINTER DATA
" STATUS
(DLAB
= 0)
(DLAB
= 0)
(DLAB
= 0)
(DLAB
= 0)
(DLAB
= 0)
(DLAB
= 1 )
(DLAB = 1 )
(DLAB= 1)
(DLAB = BIT 7)
1 E41 F
l EOSF
1
E03F
1 E07D
1 E09D
1 E09D
l EOBD
l EODD
1
E07F
1 E07F
1 E09F
l EOFF
l E01 F
lEllF
l E01 F
1 E1 3F
l E01 F
1E15F
l E01 F
1E17F
l EOlF
l EOlF