I have a DS89c450 which I wish to program and so far have had no success. I have no programmers, so I need to utilise the ISP capabilities. I have the crystal connected (16Mhz) as well as the power. The data sheet indicates that EA and RST need to be pulled up, and PSEN needs to be pulled down to enter programming mode. Can these be connected straight to VCC/GND or do they need to be connected through a resistor? If so, what size would suit?
By using USB to Serial, I no longer need a 232 transciever do I? That would only apply to programming through a conventional serial port wouldn't it?
Once hardware issues are solved, I need to be able to program the chip. I have installed Kiel with C51 addon. I believe this is all I need to write the program. Following this, how will I write the software onto the chip? What software will I require to do so?
Whilst there are some tutorials online, they all provide basic information, not enough for a beginner. I'm hoping that any answers will be detailed enough to assist other beginner 8051 people like myself.