![]() Note: As a rule of the thumb, it's wise to supply at least 20mA/slot to be able to support the existing sound or RS-232 cartridges.Not connected on MSXs Casio, General PCT-50, Hitachi MB-H1, Omega MSX, Victor HC-30 and Yamaha SX-100. Power source -/+12V must be 50mA max for all slots.Power source +5V must be 300mA max per slot.In audio and telephony, dBm is typically referenced relative to a 600 Ohm impedance.Even pin numbers run from right to left on front side of cartridge and odd pins from left to right on backside.You look at front side of cartridge when alignment hole is at left.This signal controls direction of external databus buffer Cartridges are selected and L level is output from each cartridge at data transmission time ROM addresses 4000-BFFF select signal (for 256k ROM) ![]()
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