Epson Equity LT Product Information Guide - Page 3

I/O Port Addresses Address Function 000-OlF DMA Controller 020 - 03F Interrupt Controller 040 -05F Timer / Counter 080 - 07F Programmable Peripheral Interface 080 - 09F DMA Page Register OAO Non - Maskable Interrupt Mask 2F8-2FF Serial Port 2 320 - 32F Hard Disk Controller 3BC - 3BF Parallel Port 3D0 - 3DF Video (LCD/CRT) Controller 3FO-3W Floppy Disk Controller 3F8 -3FF Serial Port 1 03DA Gradation Selection 1184-1185 RTC and CMOS RAM 1188 System Status Register DMA Channels Channel Function 0 DRAM Refresh 1 Spare 2 FDD Controller 3 HDD Controller Hardware Interrupts NUMBER FUNCTION IRQO IRQl IRQ2 IRQ3 IRQ4 IRQ5 IRQ8 IRQ7 Timer Output Keyboard Reserved Serial Port 2 Serial Port 1 Hard Disk Floppy Disk Printer Equity Series Computers 12/12/88 EQUITY LT EQLT-3