Two $8088$ microprocessors are interfaced using two $8255$A devices $($configured in MODE $2)$:

$-$ One device is connected to each microprocessor.

$-$ Port A is the common data bath between the two systems.

$-$ Handshake signals of both $8255$A devices are connected with each other.

$-$ Assuming that both of them are interfaced in the status check mode.

$-$ And the $8255$A is located starting from address FF$00$H of the I$/$O address space of the first microprocessor:

a$.$ Draw a simple block diagram for the system showing only the handshake signals associated with this application

b$.$ Give a brief justification for your design.

c$.$ Write a sequence of instructions for the first microprocessor to initialize the $8255$A$.$

d$.$ Write a sequence of instructions for the first microprocessor to output a data byte.

e$.$ Write a sequence of instructions for the first microprocessor to receive a data byte.