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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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VT8231 датащи(PDF) 36 Page - List of Unclassifed Manufacturers |
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VT8231 датащи(HTML) 36 Page - List of Unclassifed Manufacturers |
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36 / 132 page  VT8231 Preliminary Revision 0.8 October 29, 1999 -30- Register Overview 7HFKQRORJLHV ,QF :H &RQQHFW :H &RQQHFW Table 3. Registers Legacy I/O Registers Port Master DMA Controller Registers Default Acc 00 Channel 0 Base & Current Address RW 01 Channel 0 Base & Current Count RW 02 Channel 1 Base & Current Address RW 03 Channel 1 Base & Current Count RW 04 Channel 2 Base & Current Address RW 05 Channel 2 Base & Current Count RW 06 Channel 3 Base & Current Address RW 07 Channel 3 Base & Current Count RW 08 Status / Command RW 09 Write Request WO 0A Write Single Mask WO 0B Write Mode WO 0C Clear Byte Pointer FF WO 0D Master Clear WO 0E Clear Mask WO 0F Read / Write Mask RW Port Master Interrupt Controller Regs Default Acc 20 Master Interrupt Control — * 21 Master Interrupt Mask — * 20 Master Interrupt Control Shadow — RW 21 Master Interrupt Mask Shadow — RW * RW if shadow registers are disabled Port Timer/Counter Registers Default Acc 40 Timer / Counter 0 Count RW 41 Timer / Counter 1 Count RW 42 Timer / Counter 2 Count RW 43 Timer / Counter Control WO Port Keyboard Controller Registers Default Acc 60 Keyboard Controller Data RW 61 Misc Functions & Speaker Control RW 64 Keyboard Ctrlr Command / Status RW Port CMOS / RTC / NMI Registers Default Acc 70 CMOS Memory Address & NMI Disa WO 71 CMOS Memory Data (128 bytes) RW 72 CMOS Memory Address RW 73 CMOS Memory Data (256 bytes) RW 74 CMOS Memory Address RW 75 CMOS Memory Data (256 bytes) RW NMI Disable is port 70h (CMOS Memory Address) bit-7. RTC control occurs via specific CMOS data locations (0-Dh). Ports 72-73 may be used to access all 256 locations of CMOS. Ports 74-75 may be used to access CMOS if the internal RTC is disabled. Legacy I/O Registers (continued) Port DMA Page Registers Default Acc 87 DMA Page – DMA Channel 0 RW 83 DMA Page – DMA Channel 1 RW 81 DMA Page – DMA Channel 2 RW 82 DMA Page – DMA Channel 3 RW 8F DMA Page – DMA Channel 4 RW 8B DMA Page – DMA Channel 5 RW 89 DMA Page – DMA Channel 6 RW 8A DMA Page – DMA Channel 7 RW Port System Control Registers Default Acc 92 System Control RW Port Slave Interrupt Controller Regs Default Acc A0 Slave Interrupt Control — * A1 Slave Interrupt Mask — * A0 Slave Interrupt Control Shadow — RW A1 Slave Interrupt Mask Shadow — RW * RW accessible if shadow registers are disabled Port Slave DMA Controller Registers Default Acc C0 Channel 0 Base & Current Address RW C2 Channel 0 Base & Current Count RW C4 Channel 1 Base & Current Address RW C6 Channel 1 Base & Current Count RW C8 Channel 2 Base & Current Address RW CA Channel 2 Base & Current Count RW CC Channel 3 Base & Current Address RW CE Channel 3 Base & Current Count RW D0 Status / Command RW D2 Write Request WO D4 Write Single Mask WO D6 Write Mode WO D8 Clear Byte Pointer FF WO DA Master Clear WO DC Clear Mask WO DE Read / Write Mask RW |
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