File:Motorola 6800 Assembly Language.png
Summary
An assembly language listing for a <a href="https://en.wikipedia.org/wiki/en:Motorola_6800" class="extiw" title="w:en:Motorola 6800"> Motorola 6800</a> 8-bit microprocessor. This is a page from a "Monitor" program that communicates to a serial terminal connected to a MC6850 Asynchronous Communications Interface Adapter (ACIA). The routines here initialize the ACIA (INITA), read an ASCII character (INCH) and read a hexadecimal digit (INHEX).
The first line of the INCH routine is located at hexadecimal memory address C010 and has the label INCH in the first text column. The instruction "LDA A ACIA" is a load accumulator A (opcode B6) from location 8004. (The symbol ACIA is defined as 8004 on a previous page.)
This program was used in a single board Motorola MC6802 system that was designed and built as a university project in 1980 by Michael Holley.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:08, 6 January 2017 | | 1,013 × 1,613 (141 KB) | 127.0.0.1 (talk) | <p>An assembly language listing for a <a href="https://en.wikipedia.org/wiki/en:Motorola_6800" class="extiw" title="w:en:Motorola 6800"> Motorola 6800</a> 8-bit microprocessor. This is a page from a "Monitor" program that communicates to a serial terminal connected to a MC6850 Asynchronous Communications Interface Adapter (ACIA). The routines here initialize the ACIA (INITA), read an ASCII character (INCH) and read a hexadecimal digit (INHEX). </p> <p>The first line of the INCH routine is located at hexadecimal memory address C010 and has the label INCH in the first text column. The instruction "LDA A ACIA" is a load accumulator A (opcode B6) from location 8004. (The symbol ACIA is defined as 8004 on a previous page.) </p> <p>This program was used in a single board Motorola MC6802 system that was designed and built as a university project in 1980 by Michael Holley. </p> |
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