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Fiber switches works at one speed only.
You can't connect a Fiber Gigabit port on a switch to a 100FX switch port on another.
To connect them, you could use:
100FX to 10/100 Base T RJ45 converter and
A small 10/100 Base T switch with Fiber Gigabit port included
Anybody has technical information on SAS protocol used on IGT's slot machines ?
I couldn't find any tech. information on SAS ( Slot Accounting Software).
It is a serial communication protocol used on slot machines to send accounting information to a central host.
I use PonyProg adapter and software for AT89S micro.
Adapter described on:
AVR ISP (STK200/300) parallel port interface
Please note that adapter is AT89S compatible.
Nichrome is used for Power resistors or Toasters.
Bad as a shunt. It has a high temp coefficient.
Constantan is better. It's a classic alloy for shunts.
But 5A is not so high. Why don't use several low tempco standard resistors in parallel instead of building a custom one ?
a) Read Atmel Application Note ANM055 to get a second Async Interface on 80C51
b) Or use a 8051 with two serial ports. ( Dallas - MAXIM)
c) If you use an external UART, you will waste a lot of I/O pins.
d) Another option, but I don't test it yet: An Atmel 89S8252 has an SPI interface. You can...
GDS II is a format used on IC masks generation.
It was developed by Calma several years ago.
You can read more about this on VLSI Design Books.
You can read: https://www.rulabinsky.com/cavd/text/chapc.html
1- Go to Ponyprog: www.Lancos.com/prog.html
2- Download software
3- Build the AVR ISP parallel port interfase described there.
You can also use it for Atmel AT 89S. Please, read help file ( AT 89S needs to configure " invert reset" on programming software)