Tony fancy posting this then going off to bed?? waiting for your return but then I will be in bed all the best from Art Tony you have put some effort in to this one I have my Weller Standing by. ----- Original Message ----- From: Tony Nixon To: Sent: Thursday, March 23, 2000 12:47 AM Subject: ROMzap comes alive | Woo Hoo! I nearly fell off my seat. | | Get PIC'n for 50 cents. | | I just got ROMzap to program the user configurable boot code into a | 16F873 without a programmer. It takes about 20 secs. I haven't got it to | auto erase the code protect yet, but for prototype work, I don't think | code protect matters. In fact, you can set the fuse to any value you | like, but WRT stays on, CP and DEBUG stay off. | | I added the option to include a CLRWDT command into the boot code in | case the WDT is enabled, and you can set the ADCON1 register so that the | pins with A2D can be configured to digital if needed. | | The boot programmer uses the serial port and the parts for it cost about | 50 cents if you have a spare female DB9 connector. I just used a spare | dual power supply to get 5V and 13V and threw it all together on a | breadboard. | | I had some trouble getting the timing to work properly over different | speed PCs, but I think I've overcome that now. I can't tell much | difference on a CRO anyway. | | I'll try to get the schematics, PCB and help file updated tonight. | | -- | Best regards | | Tony | | http://www.picnpoke.com | mailto:sales@picnpoke.com |