Hi Everyone.
Board is fully assembled, added 2nd VIA and wrote a simple program that confirms that 6502, clock, reset, 6522 (1 & 2), ROM and RAM works!!! Yay!
Now... as for my 6551 I tried connecting it to my computer and no luck so far.
I burned my EEPROM with Daryl's SBC-2 os, connected a ftdi (ft232rl) to usb on my mac.
my ftdi breakout board looks just like this one:
https://www.sparkfun.com/products/9716Seems to be a legit ftdi chip and I also have the driver installed on my mac.
I tried establishing a connection using Mac's terminal screen, but no sign of life.
I can see my ftdi breakout board tx LED lighting when I type my keyboard, but no reply.
I used 9600 baud rate... is that the correct baud rate?
So Im not sure if my crystal is working either. I also bought a mica 22pf capacitor, which I wonder if that's the problem.
Here's my ACIA crystal n 22pf capacitor that's on my board:
http://www.mouser.com/ProductDetail/ECS ... t4Qg%3D%3Dhttp://www.jameco.com/z/DM220-22pf-500- ... 16037.htmlI tried probing the 6551 pin 6 and 7 with my oscilloscope but on pin 6 I see nothing and on pin 7 some weird erratic signal.
Can I probe the 6551 crystal? Would I be able to see the 1.8432Mhz wave?
I just bought an oscilloscope and Im still learning how to use it
When I probe the 1Mhz can oscillator I can clearly see the square wave.
I have my 6551 connected to the ftdi breakout board like in this schematic:
http://www.grappendorf.net/projects/650 ... world.htmlOnly difference is that I have the ftdi 5v and gnd supplying the power for the sbc.
The sbc powers up fine. I checked and it's not an issue.
/CTS, /DCD and /DSR are grounded. 6551 Tx and Rx connects to the FTDI Rx and Tx. the rest are left unconnected.
I was wondering if I'm doing something wrong that you guys can help me with the above description.
Thanks in advance for any suggestion!