Hello World on a breadboard Intel 8086 16bit - part 5
Автор: twigwonderkid
Загружено: 2023-10-04
Просмотров: 558
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Building an Intel 8086 microprocessor to write assembler ASM86 machine code to write hello world to an LCD display - part 5
If you haven't seen parts 1, 2, 3 & 4 I highly recommend you check these first.
In this video I build a single clock pulse circuit using a 555 timer. This I then connect to the clock input of the 8086 and this allow me to step through one clock pulse at a time
To check that the circuit is operating and my latches and NAND gate and the newly connected Read output from 8086 to the output enable input of the eprom all operate correctly, I need to create a binary file so that I can load this into my eprom and then run the code to check its operational.
I use Microsoft Visual Studio and a Windows forms app, where I add 8086 machine code instructions to the binary file. The machine code for no operation is 90Hex so I fill all the entries of the binary file with 90Hex except for the last entries starting at address FFF0. WE know that on reset of the 8086 it begins reading instructions at address FFF0 so i add these machine codes to this location so that when the 8086 restarts it will read thse machine codes .
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![Первый запуск — сборка и программирование 16-битного макетного компьютера Intel x86 [часть 1]](https://image.4k-video.ru/id-video/VvyUAaRTsww)
