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- {
- GUY MCLOUGHLIN
-
- Program to load data into 16 Byte area of RAM known as
- the Dos "Inter-Process Communication Area".
- }
-
- Program Load_Dos_IPCA;
-
- Type
- arby16 = Array[1..16] of Byte;
-
- { "Absolute" Array Variable used to access the Dos IPCA. }
- Var
- IPCA : arby16 Absolute $0000:$04F0;
- Index : Byte;
-
- begin
- { Write data to the Dos IPCA. }
- For Index := 1 to 16 do
- IPCA[Index] := (100 + Index)
- end.
-
- { Program to read data from 16 Byte area of RAM known }
- { as the Dos "Inter-Process Communication Area". }
- Program Read_Dos_IPCA;
-
- Type
- arby16 = Array[1..16] of Byte;
-
- { "Absolute" Array Variable used to access the Dos IPCA. }
- Var
- IPCA : arby16 Absolute $0000:$04F0;
- Index : Byte;
-
- begin
- Writeln;
- { Display the current data found in the Dos IPCA. }
- For Index := 1 to 16 do
- Write(IPCA[Index] : 4);
- Writeln
- end.
-
- {
- NOTE:
- if you plan on using this in any of your serious applications, I would
- recommend using the last 2 Bytes of the IPCA as a CRC-16 error-check. As
- you have no guarantee that another Program won't use the IPCA too.
- }