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Is it possible to simulate the 8255 by a plugin or anything else in keil µvision 2 ?
Greetings
Martin
As an exercise in interfacing, it is a perfectly valid exercise. As an example of current practice, it isn't. making a device made for MMIO work with port I/O because it is too slow for MMIO with todays practice, or run a 12 clock '51 with a 4 MHz crystal and do MMIO.
To the OP: the main validity in an exercise with a 8255 is to teach you to check timing of all devices in the datasheets, putting a modern '51 and a 8255 together 'naturally' WILL fail.
Erik
Ok. This school doesn´t teach the 8255 as "the Holy Grail"
I think it´s an exercise just to think about 8051 and peripherie.
Greetings from Germany
Why are we to work with this antique? are you just too lazy to upgrade the curriculum?
make your instructor aware of this thread