[Put Waveblaster daughter board (Yamaha DB50XG) in a box?]

Unfortunatly my eyes are to old for so small soldering !!

I have my glasses, my head magnifier :) With some practice it's not so hard work.

Here are the promised pics.

[Put Waveblaster daughter board (Yamaha DB50XG) in a box?]

Hi Mike,

Attached the schema of my DAC modification.

DB60 Codec mod sch.pdf

I'll take some photos also, and try to post tomorrow.

Norbim

[Put Waveblaster daughter board (Yamaha DB50XG) in a box?]

I'm just finishing a box with the XG60 (NEC clone) based on the MistralXG project (with PIC18F2550, USB). My mods:

- The audio output from the card is quite noisy, so I bypass the original DAC on the XG board. I connected the PCM data lines to a small board with PCM1754 DAC with very good result.

- Audio input with opamp buffers to the XG60

- Modified Midi routing circuit

- SW mod for the PIC (routing, flash for patches, mode selection, instrument selection etc.)

Current state:

HW is almost ready and working. SW is under dev.

[ALPS K type motorized faders]

Hi, I'm in for 8.

[possible CLCD driver bug in MIOS32 ?]

Hi Torsten,

I found the solution, but it's a litle bit strange: I changed the IC2 from HCT595 to HC595. Even that the schematic suggest HCT595 for 5V LCD-s, my LCDs didn't work with it, but both work perfect with the HC595. I don't know wether others have same experience?

Best regards, Norbert

[possible CLCD driver bug in MIOS32 ?]

Thanks a lot Thorsten,

You are right, it doesn't make sense, where the RW set to zero is. I double checked all the connections, also the 5V jumper is OK. I have a 4*20 LCD on my MIOS8, which is working OK, sothe next step will be creating a cross connect cable, I'll try this LCD width my MIOS8 core and the 4*20 width the LPC core. I hope it will show where the problem is.

I'll report the result here.

Best regards, Norbert

[possible CLCD driver bug in MIOS32 ?]

Hi Torsten,

Thanks for the fast response, first of all, let me say a big thanks for this amazing project. I totally agree with the timing issue, but I'm thinking about the initialization process of the LCD. According the data sheet:

It states, that in the first 3 init instruction the RW line should be at zero, but in the code, the RW line set to zero after the first instruction (after the E line pulse). I checked the MIOS8 LCD code, and there the sequence is according the data sheet. So I suggest the following code for the first init command:

// initialize LCD

MIOS32_BOARD_J15_DataSet(0x38);

MIOS32_BOARD_J15_RS_Set(0);

MIOS32_BOARD_J15_RW_Set(0);

MIOS32_BOARD_J15_E_Set(mios32_lcd_device, 1);

MIOS32_BOARD_J15_E_Set(mios32_lcd_device, 0);

MIOS32_DELAY_Wait_uS(50000);

BR, Norbert

[possible CLCD driver bug in MIOS32 ?]

Hi all,

I tried to use a 2*20 LCD (type JHD202C with standard HD44780 like chip) with LPC core, but it was unsuccesful. After I checked all the connections and soldering, I compared the universal LCD driver with the datasheet. I found in the LCD init part of the universal LCD driver code :

// initialize LCD

MIOS32_BOARD_J15_DataSet(0x38);

MIOS32_BOARD_J15_RS_Set(0);

MIOS32_BOARD_J15_E_Set(mios32_lcd_device, 1);

MIOS32_BOARD_J15_E_Set(mios32_lcd_device, 0);

MIOS32_BOARD_J15_RW_Set(0);

MIOS32_DELAY_Wait_uS(50000);

In the first init command the RW set to zero after the E line trigger, but I think it should be before. As I haven't install the toolchain jet. could anybody please check that my founding was correct or not?

Thanks a lot for Your kind help