Questions on lab 3

Shereen Pang (shereen@interchange.ubc.ca) Sun, 29 Oct 2000 19:51:32 -1200 

Date: Sun, 29 Oct 2000 19:51:32 -1200
From: Shereen Pang <shereen@interchange.ubc.ca>
Subject: Questions on lab 3



Hi all:

I have 3 questions on lab 3.

1. How do we use generics in VHDL? I realized that the example given on
page 5 of the 3rd handout (entity nregister) is not complete, ie, it
doesn't compile because I didn't give width a value  in generic (width:
integer);

2. assembly code: how do we print an asterisk(*) on screen? how many
bytes does asterisk has?

3. Assembly code in lab 2: Why is it when we read a character from the
keyboard with MOV AH, 01H, the value of the keyboard input is stored in
AL? I assumed it's stored in AL because we subtract AL with 30H and
later move AL to DX.

can somebody help me out? thanks.

Shereen Pang