manvsmachine

you have to upload it somewhere and then use the image tags :) [img ] [ / img]

maybe you did not use the correct input in midiox? they are not all activated by default.

By the way if you can read dutch the circuits online forum will be very usefull too!;)

maybe this design is useful? it is in dutch but with a good circuit diagram. http://www.circuitsonline.net/circuits/view/33

I tried uploading again with a soundblaster and a gameport cable. Now MIOS is UP and Running!!! Thanks for your help. This was just the problem with the ID. After burning it again with bumblebee and the main.asm file mios sended upload requests. The only problem was that my midex3 did not send the sysex files correct. The core did not return any checksum.

an lm317 works fine too. a normal 7805 can not handle a current of 5A I have to think about a power supply too. My 2 displays for the sequencer use together 900 mA and that is too much for 7805 on the core module.

I think that is a problem with my midex 3. I try it tomorrow with another midi interface. I've have read a topic about troubles using a midex 3 for uploading. Maybe a good old soundblaster will do the job.:)

timestamp 648126000 us: Sysex message: F0 00 00 7E 40 00 01 F7 My core is sending this message now. Mios Studio says it is an upload request. But when i try to upload mios it says finished at the end of uploading. and the core is still sending this message.

I tried programming the pic with xwisp but then it sends nothing on the midi out.

I don't know how much current you need but you can use an 7805 too.

We use them only to power a 8051 microcontroller and to power some leds. That is not a problem. We use a philips pm2811 for testing.

I'll try it first with wouters Xwisp tool. Maybe it is possbile to program the id's with that. And i will post a topic on the dutch circuits online forum. Wouter is on that forum.

i don't know how to do this with my programmer. reconfigure the programmer so that only the first 4k block will be ; overwritten ; - MPLAB IDE: click on Programmer->Settings, change Program memory ; end address from 7fff to fff, ; thereafter click on Programmer->Program ; - MPLAB V5.4: click on PICStart Plus->Program Verify, set the end ; address from 0x7fff to 0xfff, ; thereafter click on the program button I use the program bumblebee to program. I programmed a complete robot with the pic18f452 and that programmer and i just don't know how to do this :) http://robot.manvsmachine.nl

I will try this tomorrow. I looked at the workaround but i'm afraid this is impossible with my programmer. Maybe i have to build the old jdm programmer. Thanks, Rick

It is possible with some older ATX PSU to modify them. If you do that it acts like a normal power supply without a switch. We use them at school as power supply's ;D