Orpheus II LT

Features

• AMD InterWave chip for native compatibility with Gravis UltraSound PnP software (included are the standard 1MB InterWave ROM bank and a SIMM socket for up to 16MB of RAM)
• Crystal CS4237B controller which offers SB/SB-PRO/WSS compatibility discrete YMF289B OPL3 chip
• 44.100hz 16bit S/PDIF output of all internal and external audio sources
• 2 MPU-401 options: internal CS-4237 UART interface or PCMIDI intelligent mode MPU
• Gameport, Line IN, Line OUT, MIC and Coax S/PDIF ports
• Wavetable daughterboard and AC'97 headers
• Dedicated midi-OUT port that can be used at the same time with a common gameport->midi or DB15MIDI adapter for an extra OUT and IN ports

Jumper Settings

PCMIDI Resources Control (J12)

defaults shown: port 330 and IRQ2 selected

P - jumper closed = port 330, open = port 300 2,3,5,7,10,11,12 = select one IRQ for use

MIDI Signal Routing Control (J5,J3,J4)

To allow a dual-MPU setup. defaults shown: all ports controlled by PCMIDI MPU

If PCMIDI is installed and you also activate CS4237 MPU device you can select which MPU device controls each port. Move jumper to position 1+2 (for PCMIDI) or 2+3 (for CS4237) to select MPU.

J5 = Wavetable Connector J3 = Joystick Connector J4 = MIDI Out Connector

Video on YouTube: https://youtu.be/03xrEIiZZTk?si=VAvPfFBV8rVX3COP