3100 Audio Card (250-1632) I/O Address Faxback Doc. # 3165 Only two I/O base addresses are selectable: 220Hex and 240Hex. Place the jumper on the selected pins. JP1 JP2 ┌─────┐ ┌─────┐ │ . │ │ . │ │ │ │ │<────DEFAULT │ │ │ │ │ . │ │ . │ WR-05 └─────┘ └─────┘ 24X 22X Figure 2: I/O Address Setting INTERRUPT LINE Four possible interrupt lines are available. Place the jumper on the pins of the desired Interrupt Line. ┌─────┐ ┌─────┐ ┌─────┐ ┌─────┐ ┌─────┐ │ o │ │ o │ │ o │ │ o │ │ o │ │ │ │ │ │ │ │ │ │ │ WR-05 DMA Jumper │ │ │ │ │ │ │ │ │ │ Do Not Remove│ │ │ │ │ │ │ │ │ │ ────────>│ o │ │ o │ │ o │ │ o │ │ o │ IRQ7 └─────┘ └─────┘ └─────┘ └─────┘ └─────┘ Default DRQ1 IRQ2 IRQ3 IRQ5 IRQ7 └───────────────┬──────────────┘ Interrupt Settings Figure 3: Interrupt Line Settings DMA CHANNEL You cannot change the DMA channel. The jumper on the DMA channel is required to operate the CT1350; do NOT remove it. CONNECTING EXTERNAL DEVICES Connecting speakers, microphones, joystick and line-in devices are simple However, there are a few simple rules you need to follow: Make sure devices are plugged into the correct jack. Do not plug in a microphone and line-in device at the same time. Doing so will not damage your card, but it substantially decreases the input signal to the card. Do not set volume to maximum if your speakers cannot handle the power output of the CT1350. The CT1350 generates four watts with four ohm speakers and two watts with eight ohm speakers. Use a good quality microphone. Generally, a microphone costing around US $30.00 is suitable. A condenser microphone also works. Microphone and line-in cannot be connected at the same time. HARDWARE DATA The CT1350 uses the I/O ports addresses 220H and 240H. These are jumper selectable. Factory default is 220H. The following table list I/O addresses and functions. ┌───────────┬────────────────────────────────────┬──────┐ │I/O ADDRESS│DESCRIPTION │ACCESS│ ├───────────┼────────────────────────────────────┼──────┤ │2X0H │C/MS Music Voice 1-6 data port. │Write │ ├───────────┼────────────────────────────────────┼──────┤ │2X1H │C/MS Music Voice 1-6 register port. │Write │ ├───────────┼────────────────────────────────────┼──────┤ │2X2H │C/MS Music Voice 7-12 data report. │Write │ ├───────────┼────────────────────────────────────┼──────┤ │2X3H │C/MS Music Voice 7-12 register port.│Write │ └───────────┴────────────────────────────────────┴──────┘ ┌───────────┬────────────────────────────────────┬──────┐ │I/O ADDRESS│DESCRIPTION │ACCESS│ ├───────────┼────────────────────────────────────┼──────┤ │2X8H │FM Music - Status Port. │Read │ │ │ │ │ │2X8H │FM Music - Register Port. │Write │ │ │ │ │ │2X9H │FM Music - Data Register. │Write │ │ │ │ │ │2X6H │DSP Reset. │Write │ │ │ │ │ │2XAH │DSP (Voice I/O & MIDI Read Data. │Read │ │ │ │ │ │2XCH │DSP Write Data or Command. │Write │ │ │ │ │ │2XCH │DSP Write Buffer Status (bit 7). │Read │ │ │ │ │ │2XEH │DSP Data Available Status (bit 7). │Read │ └───────────┴────────────────────────────────────┴──────┘ NOTE: The above table applies only when C/MS chips are present. INTERRUPT LINE (IRQ) CONFLICT The CT1350 uses interrupt line IRQ7 as default. Some printer interface (LPT1) snatch away the IRQ7 even though it never requires the interrupt. If a conflict occurs, you an change the interrupt of the CT1350 to IRQ2 or IRQ5. (See DMA and INTERRUPT ASSIGNMENT TABLE for the best IRQ line to use). I/O ADDRESS CONFLICT The possibility of conflict on the default I/O address of 220H is very small. We advise against changing this I/O port address. Changing from this default I/O address means that you will have to reinstall software programs that support CT1350. If there is a conflict with another card in your system, we suggest you change the I/O port address of the other card. Remember to reinstall the I/O port address for programs running that card. Also set the BLASTER environment. ┌─────────┬───────────────────────────┬───────────────────────────┐ │INTERRUPT│ AT MACHINE │XT MACHINE │ ├─────────┼───────────────────────────┼───────────────────────────┤ │IRQ 0 │Used by System Timer │Used by System Timer │ ├─────────┼───────────────────────────┼───────────────────────────┤ │IRQ 1 │Used by Keyboard │Used by Keyboard │ ├─────────┼───────────────────────────┼───────────────────────────┤ │IRQ 2 │Used by System │FREE │ ├─────────┼───────────────────────────┼───────────────────────────┤ │IRQ 3 │FREE (or COM Port 2) │FREE (or COM Port 2) │ ├─────────┼───────────────────────────┼───────────────────────────┤ │IRQ 4 │Used by COM Port 1 │Used by COM Port 1 │ ├─────────┼───────────────────────────┼───────────────────────────┤ │IRQ 5 │FREE │Used by Fixed Disk │ ├─────────┼───────────────────────────┼───────────────────────────┤ │IRQ 6 │Used by Diskette Controller│Used by Diskette Controller│ ├─────────┼───────────────────────────┼───────────────────────────┤ │IRQ 7 │FREE (Maybe LPT1) │FREE (Maybe LPT1) │ └─────────┴───────────────────────────┴───────────────────────────┘ PC INTERRUPT TABLE ┌───────────┬───────────────────────────┬───────────────────────────┐ │DMA CHANNEL│ AT MACHINE │XT MACHINE │ ├───────────┼───────────────────────────┼───────────────────────────┤ │DMA 0 │FREE │Used for RAM Refresh. │ ├───────────┼───────────────────────────┼───────────────────────────┤ │DMA 1 │Used by CT1350 │Used by CT1350 │ ├───────────┼───────────────────────────┼───────────────────────────┤ │DMA 2 │Used by Diskette Controller│Used by Diskette Controller│ ├───────────┼───────────────────────────┼───────────────────────────┤ │DMA 3 │FREE │Used by Fixed Disk │ └───────────┴───────────────────────────┴───────────────────────────┘ (SMC/all-07/14/94)