Tomek

Yeah, the Chippies have arrived my German HQ yesterday!! :D ..sending Love to Australia.. :) :) :)

ehhhmmm, that must be an error in the digicam... :-[ The grounds are all connected together like described in "mbhp_opl3_interconnections.pdf".... After another lookup to the interconnection diagram i saw that i accidently swapped two wires (A0 and WR) on the CORE side. That was the reason for no sound. ...but after another tests if found the reason for the code upload error problems: It seems like the old PSU from the Gemini Mixer i am using is not powerful enough. All worked fine after i have disconnected the lcd LED-Backlight. I have bought that old sharp lcd on ebay some time ago. And the datasheet sez: the backlight is consuming 400mA!!! That`s definetly the most hungry part in that little box ;)

i have checked almost every solder point on the downside with this pocket microscope: and have found nothin.... but 4 eyes can see more than 2 ;) sorry for the bad pics, my digi is a shame! before you ask: as you can see, the sockets for the TL`s are too big. But i had no others, so i just bended off the unused pins.

aight, ok :) me feelin no shame anymore... I´ve checked the OPL3-module again. No bad connections or bridges found. All voltages ok. After gettin the OPL3 PCB back in the case, some "magic" happened: I can upload now software without errors, even with a connected OPL3 PCB! :) I´ve uploaded mbfm_testtone.hex, but still no sound >:( How can i test the YMF262 or the YAC512 directly? Maybe i have fried one accidently during solder/desolder - process???

shame on me, i didn`t want to place an ad :-[ But: i`m gonna order that PCB-Kit coz all parts, even the SSM, are inlcuded. This is much better than missing a bulk order for pcb and another for the SSM and another for any exotic parts needed .... :( AND: ironically i found the darkside-board on the big "auction house" (which i wouldn`t name in fear of doin shameless ad), when i was searching for the SSM chips... :P whatever.... i still don`t have a clue what magical effects are responisble for the upload errors, when the OPL3-Board is connected to the core during the upload process

YEYA, boing - bumm tschak! 8) i´ve checked the interconnections from CORE to OPL3 module. All good.... Maybe there`s some ripple in the 5V lane? I´m using a psu from an old Gemini Battlemixer, providing +5v, +12V, -12V. YES, i`m planning to integrate sometime a "Dark Side" SSM2044 PCB from SomaticCircuits.com 8) anyway.. i can`t check the voltage ripple, coz i have no scope. I could use a "soundcard-scope" but i`m not sure if it`s a good idea pluggin a 5VDC in my soundcard input...

Yes i gotta check that anyway, cause it is producin no sound ... :(

YEEAH BABY YEEEAAAAAAAHHH!!!!! :D :D :D :D Thanxx for the help guys :) Things are workin now.... by the way: All Test were gooood. Even my M-Audio Fasttrack Pro seems not shitty. Midi Loopback worked... ...the only thing was that i plugged out all the connections from the Core to the OPL3 module and then upload worked correctly! Wicked!! :P I´m not sure, but shouldn`t that work with a fully assembled gadget? ;)

Hi, i think CORE and Bootloader are working, cause i can see the blocks in the upper row of the displayand i can see the "01F7" Message in the MIDI-IN-Monitor of MIOSStudio. I`m using the MIDI-Interface of my M-Audio Fasttrack Pro USB-Soundcard. The Errormessage is: Starting upload of mios_v1_9f_pic18f452.hex Hex file contains code in MIOS range, forcing reboot! Received Upload Request Sending block 00000400-000004FF Error: Received unexpected Upload Request Error: Received unexpected Upload Request Error: Received unexpected Upload Request Error: Received unexpected Upload Request Error: Received unexpected Upload Request ..... and so on I wonder why it sayz there is Code in the MIOS Range... what else i am trying to upload? There is no oldeR MIOS on the PIC. I cleared it before burning the Bootloader.

Hi, after months of trying to burn the V1.2 Bootloader to my old PIC 18F452 with my even older JDM-Burner, i succeeded!!! Bootstraploader V1.2 successfully uploaded and verified! "HELL YEEEEAH!!" :D :D :D i thought..... ...but no matter what i wanna upload via MIOSSTUDIO, it`s always aborting.... :o :o :o what can i do now ???

Yeah, thanx for removing the poll Stryd_one :) I googled the datasheets of the YAC512 & YMF262, and looked at this page: http://www.epanorama.net/documents/audio/spdif.html for the SPDIF characteristics. It seems that default sample format is 16bit (same as whats coming out the ymf262) but spdif needs 4 additional control bits :-\ I have no clue what the ymf262`s SMPAC+SMPBD (Sample/Hold) lines do ??? I`m not experienced in reading protocol-timing-tables, but for me it looks like that some extra wiring & coding is needed to run a MBFM only with a spdif output :'(

I`m so stoopid! ::) But now i know the difference between a topic and a poll, this should be a topic and no poll. Actually there is nothing to poll :P don`t know how to change that...

Hi everyone! I just "slaughtert" an old Mozart Soundcard to get that YMF262 Chip, unfortunately there is no YAC512 DAC Chip on that board. Anyway... I saw on the pictures of TK`s FM-Synth that there is a Digital-Chinch-Jack at the Backpanel. I`ve spent hours and hours searching in the Forum about that... no result ??? Does anybody know if there is additional hardware needed for this, or can the digital sound output, that routes to the DAC, be connected to that Chinch-Jack directly? Is the output spdif compatible? If Yes, this could be a superb option for a ultra-minimal FM-Synth, in a mini-mini case with mini-mini 5VPSU ;D This thing could sit on my external souncard, connected to its digital-in... If NO, ...i need additional material from Ebay to slaughter ;D greetz, Tomek