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36 lines
1.0 KiB
Markdown
36 lines
1.0 KiB
Markdown
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# Using Zilog's SIO as a console
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The RC2014 has an optional module called the Dual Serial Module SIO/2 which is
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built around Zilog's SIO chip. This module is nice because when paired with the
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Dual Clock Module and when using port B, it's possible to run a UART with a baud
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rate lower than 115200.
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Collapse OS has a driver for it (although for now, only port A is supported by
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it). Let's use it.
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## Gathering parts
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* A "classic" RC2014
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* A Dual Serial Module SIO/2
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## Build the binary
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You'll have to edit the base recipe's xcomp unit like we do in the sdcard
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recipe.
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* Locate RC2014 recipe in blkfs
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* Locate SIO driver
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* The driver main page gives you references for declarations and for code.
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* In the base xcomp unit, replace ACIA declataions with SIO's
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* Replace ACIA code with SIO's
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* At the bottom, replace "ACIA$" with "SIO$".
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You can build with `make`.
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## Setup
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After you've placed the binary on your RC2014's EEPROM, simply replace your
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regular Serial Module with the Dual Serial Module and plug yourself into port A.
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You should have a functional console.
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