sunsea78 wrote:
1- The connection of the circuit to the PC do we need an other interface?
I don't thing you will more than the 25 pin connector for the parallel port.
If you set the port to standard parallel port, you should be able to connect the 8 data leads from the 74hc573 directly to the 8 data leads of the parallel port. Connect the parallel port strobe to the strobe input and the busy pin to the busy lead of the printer port. I do not have pinouts of the parallel port but you should be able to find them online. If the strobe input is active low, you'll need an inverter as the 75hc573 requires an active high strobe.
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2- The connection to the Pc has to be from a parallel port. Can we connect via a serial port?
Yes. You can replace the parallel port with an RS-232. Pins 2&3 of the ATM8 are the rxd and txd pins. You'd need to rewrite the video code to support the RS-232 port. You will also need some sort of level conversion for RS-232 such as a MAX232 or MAX233.
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3- "J1 - 14 pin header (7x2x.01 - 103186-7-ND” how are ewe going to send data from the PC’s parallel Port. what is the pin-out?
The pinout is on my web site. Look for the parts placement diagram. Just above it are the pin labels.
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4- "http://users.softcom.net/darylr/io/vid3.html” in this web page does the first Picture has a source code? Could you please send met he source code? I will be enlightened better.
The "splash" screen was generated by storing the entire screen contents in the FLASH and doing a block copy. There is no code that actually builds the screen.
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5- I will be writing the text sending programme in the visual basic programme. Do you have a source code in hand even a small one will be perfect?
Sorry. I do not have any VB code to show you.
Goodluck with your project.
Daryl