Lenovo NetVista Technical information manual for NetVista 6269, 6568, 6569, 65 - Page 58

Table 34. DMA I/O address map Address (hex) 000E Description Channels 0-3, clear mask register (write) 000F Channels 0-3, write all mask register bits 0081 Channel 2, page table address register 0082 0083 Channel 3, page table address register Channel 1, page table address register 0087 Channel 0, page table address register 0089 Channel 6, page table address register 008A Channel 7, page table address register 008B 008F Channel 5, page table address register Channel 4, page table address/refresh register 00C0 Channel 4, memory address register 00C2 Channel 4, transfer count register 00C4 00C6 Channel 5, memory address register Channel 5, transfer count register 00C8 Channel 6, memory address register 00CA Channel 6, transfer count register 00CC Channel 7, memory address register 00CE 00D0 Channel 7, transfer count register Channels 4-7, read status/write command register 00D2 Channels 4-7, write request register 00D4 Channels 4-7, write single mask register bit 00D6 00D8 Channels 4-7, mode register (write) Channels 4-7, clear byte pointer (write) 00DA Channels 4-7, master clear (write)/temp (read) 00DC Channels 4-7, clear mask register (write) 00DE Channels 4-7, write all mask register bits 00DF Channels 5-7, 8- or 16-bit mode select Bits 00 - 03 00 - 03 00 - 07 00 - 07 00 - 07 00 - 07 00 - 07 00 - 07 00 - 07 00 - 07 00 - 15 00 - 15 00 - 15 00 - 15 00 - 15 00 - 15 00 - 15 00 - 15 00 - 07 00 - 02 00 - 02 00 - 07 Byte pointer Yes Yes Yes Yes Yes Yes Yes Yes 00 - 07 00 - 03 00 - 03 00 - 07 48 NetVista™ Technical Information Manual