Toshiba T4800CT Detailed specs for T-Series T4800CT - Page 5

T4800CT (continued) I/O Port Assignment Port Address From / To Device / Function '000' / '01F' 82C37; DMA Controller 1 '020' / '03F' 82C59; PIC1 '040' / '05F' 82C54; Timer '060' / '06F' KBC *6 '070' NMI Mask Register '070' / '07F' RTC '080' / '09F' DMA Page Register *3 '0A0' / '0BF' 82C59; PIC 2 '0C0' / '0DF' 82C37; DMA Controller 2 '0E0' / '0EF' Special Register *2 '0F0' / '0F7' Math Coprocessor '100' / '1EF' VGA '1F0' / '1FF' HDC '200' / '207' Game I/O *1 '208' / '20F' (Not used) '210' / '217' Expansion Unit *1 '218' / '21F' (Not used) '220' / '257' (Not used) '258' / '25F' (Not used) '260' / '267' (Not used) '268' / '26F' (Not used) '270' / '277' (Not used) '278' / '27F' Parallel PRT 2 *1 '280' / '2A7' (Not used) '2A8' / '2AF' Reserved for EMS *1 '2B0' / '2B7' (Not used) '2B8' / '2BF' Reserved for EMS *1 '2C0' / '2DF' (Not used) '2E0' / '2E7' (Not used) '2E8' / '2EF' Reserved for EMS *1 '2F0' / '2F7' (Not used) '2F8' / '2FF' Serial port 2 (COM 2) '300' / '31F' Prototype Card *1 '320' / '32F' XT type HDC *1 '330' / '337' (Not used) '338' / '33F' Serial Port 3 (COM 3) *5 '340' / '377' (Not used) '378' / '37F' Parallel PRT 1 '380' / '38F' SDLC, Bisynchronous 2 *1 '390' / '39F' (Not used) '3A0' / '3AF' Bisynchronous 1 *1 '3B0' / '3BF' MDA, Parallel PRT 3 '3C0' / '3DF' CGA, EGA, VGA '3E0' / '3E7' (Not used) '3E8' / '3EF' Serial Port 3 (COM 3) *5 '3F0' / '3F7' FDC *4 '3F8' / '3FF' Serial Port (COM 1) '400' / '47F' (Not used) '480' / '49F' DMA High-Page Register *3 Note:*1 Used for expansion cards installed in Deskstation IV expansion slots. *2 Used only for T4800CT *3 16 x 8 bit read-write registers are assigned to addresses '080' to '08F' and '480' to '49F', however, part of this area is assigned for DMA page register and DMA high-page register. The area not used for either of these registers can be used for other purposes. However, if ports '&90' to '&9F' are accessed, '&80' to '&8F' are also accessed. '&81', '&82', '&83', '&87', '&89', '&8A', '&8B', and '&8F' are used for DMA Page Register/DMA High Page Register. '&80', '&84', '&85', '&86', '&88', '&8C', '&8D', and '&8E' are used for other purposes or not used. = 0; DMA Page Register &=4: DMA High Page Register *4 '3F6' and '3F7' are also used for HDC. *5 Used for Deskstation IV's COM 3 *6 '060', '064' KBC, '061' is system status port. Toshiba America Information Systems Inc. ("TAIS") shall not be liable for damages of any kind for use of this information, which is subject to change without notice. Copyright 1994 TAIS. 4800.DOC Rev. 3 12/29/94 MQC/nmm Page 1 of 5