IRWIN SC499-2 Card Type Tape drive controller Hard Drives supported None Floppy drives supported None Data Bus 8-bit ISA Card Size Half-length, full-height [Image] CONNECTIONS Function Label Tape drive interface J3 Note:Number of pins is unidentified. USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not alter A/8 Closed » PC's <386-20 mode enabled B/1 Open PC's >386-20 mode enabled B/1 Closed » POST enabled C/1 Closed POST disabled C/1 Open » Factory configured - do not alter C/2 Open » Factory configured - do not alter C/3 Open » Factory configured - do not alter C/4 Open » Factory configured - do not alter C/5 Closed » Factory configured - do not alter C/6 Closed » Factory configured - do not alter C/7 Open Note: When installing the controller in a PC >386-20 disable POST. DMA CHANNEL SELECTION Channel B1/1 B1/2 B1/3 B2/1 B2/2 B2/3 » 1 Closed Open Open Closed Open Open 2 Open Closed Open Open Closed Open 3 Open Open Closed Open Open Closed BASE I/O ADDRESS SELECTION Address A/1 A/2 A/3 A/4 A/5 A/6 A/7 100h Closed Closed Closed Closed Closed Open Closed » 200h Closed Closed Closed Closed Closed Closed Open 220h Closed Closed Open Closed Closed Closed Open 280h Closed Closed Closed Closed Open Closed Open 300h Closed Closed Closed Closed Closed Open Open 338h Open Open Open Closed Closed Open Open 350h Closed Open Closed Open Closed Open Open 360h Closed Closed Open Open Closed Open Open 370h Closed Open Open Open Closed Open Open INTERRUPT SELECTION Setting B/2 B/3 B/4 B/5 B/6 B/7 IRQ2 Closed Open Open Open Open Open » IRQ3 Open Closed Open Open Open Open IRQ4 Open Open Closed Open Open Open IRQ5 Open Open Open Closed Open Open IRQ6 Open Open Open Open Closed Open IRQ7 Open Open Open Open Open Closed MISCELLANEOUS TECHNICAL NOTES The SC499-2 is used with FasTape tape drive. The tape drive cannot be used in EISA systems , 486 or 386 faster than 25MHz.