BigLadWhillis wrote:
At first i was mostly concerned about the cost of the Logic Chips and the space they would take up on the board, however after a quick search have found them to be excruciatingly cheap! So I Believe I will integrate it now to use less address space so i can have more ram and integrate your simple yet so much better map into my own! Thanks for the help.
For your first build, I recommend using 74HC logic. It's fast enough to handle an 8 MHz system, but somewhat forgiving of circuit construction when compared to the faster logic families, e.g., 74AC. Use of 74LS devices is not recommended, as their logic levels are not compatible with the 74HC series. Also, 74LS hardware has weak fanout, which will affect the stability of your circuit, depending on construction methods. If you must use 74LS with CMOS devices, use 74HCT logic to efface the voltage level differences.