Tested it with HU connected now.
need some help
Emulator software: IPbus_v4.4 -LOG enabled
Connection: [HU]----<BUSP and BUSM>----[CD-emulator]----<RS232>----[PC-com port]
I get lots of data (numbers printed on screen on yaap terminal) from the CD-emulator. When i press different buttons i get lots of different data on the terminal. It seems to be working.
Emulator software: IPbus_v4.4 -LOG disabled
Yampp software: Yampp_pioneer_v2.2 -edited xtal value for VLSI chip.
Connection: [HU]----<BUSP and BUSM>----[CD-emulator]----<RS232>----[Yampp3/USB with ATmega162 chip (in mega161 mode)]
It doesn't work when I connect the Yampp to the CD-emulator.
The harddisk keeps turning on and off, like the yampp gets bad signals or something. There's no sound from the yampp.
BUSP and BUSM change voltages between approx 0,85 V and 2,75 V in periods of about 2 seconds. (dont have a scope to see signals with).
The cable i use for the BUSP and BUSM is a twisted pair cable, not shielded. It is approximately 35 cm long. Could the signal be distorded through the cable, or have i done something else wrong???
Is it needed to connect pin 3 on the IPbus connector on the back of the HU to GND, when I have connected pin 10 and 11 to GND???