Aptiva 2137-SL A Memory Map - I/O Addresses
This table shows the hexadecimal addresses for the system memory regions.
You may use this information for adapter cards that require you to set up memory regions.
Adress range Description
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0-640KB (000000-09FFFF) Base memory
640-768 KB (0A0000-0BFFFF) PCI/ISA video buffer memory
768-800 KB (0C0000-0C7FFF) Video BIOS memory
800-896 KB (0C8000-0DFFFF) ISA card BIOS and buffer memory
896-960 KB (0E0000-0EFFFF) BIOS extension memory, Setup and
POST memory, PCI development BIOS
960-1024KB (0F0000-0FFFFF) System BIOS memory
1024 KB - Upper Limit Main memory
Upper Limit - 4 GB PCI memory
This table shows the hexadecimal addresses for each of the system board input/output
(I/O) functions. You may use this information for adapter cards that require you to set up
I/O addresses.
Adress range (hexadecimal) Function
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0000-001F DMA controller 1
0020-003F Interrupt controller 1
0040-0047 System timer
0050-0057 System timer
0060-006F System controller 8742
0070 CMOS RAM address and NMI mask
0078-007B Real-time clock (RTC)
0080-009F DMA page register
00A0-00BF Interrupt controller 2
00C0-00DF DMA controller 2
00F0-00FF Math coprocessor
0170-0177, 0376 Secondary IDE controller
01F0-01F7, 03F6 Primary IDE controller
0200-0207 Joystick
0220-022F,0388-038B,0534-0537 Audio
0330-0333 MIDI
0278-027F Parallel port 2
02F8-02FF Serial port
0378-037F Parallel port 1
03F0-03F7 Diskette drive controller
03F8-03FF Modem
0CF8 PCI mechanism #1 config.addr.register
0CFC PCI mechanism #2 config.data register
7400-740F Bus master IDE
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