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Clarify CIO Parity Settings, Issue #488

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- Updated System Guide to clarify the function of the parity settings per Issue #488
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Wayne Warthen
2025-01-05 16:03:22 -08:00
parent 4e716c6b74
commit b02aecb45d
9 changed files with 17 additions and 17 deletions
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Source/Doc/SystemGuide.md
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@@ -775,18 +775,18 @@ Character devices can usually be configured with line characteristics
such as speed, framing, etc. A word value (16 bit) is used to describe
the line characteristics as indicated below:
| **Bits** | **Characteristic** |
|---------:|----------------------------------------|
| 15-14 | Reserved (set to 0) |
| 13 | RTS |
| 12-8 | Baud Rate (see below) |
| 7 | DTR |
| 6 | XON/XOFF Flow Control |
| 5 | Stick Parity (set for true) |
| 4 | Even Parity (set for true) |
| 3 | Parity Enable (set for true) |
| 2 | Stop Bits (set for true) |
| 1-0 | Data Bits (5-8 encoded as 0-3) |
| **Bits** | **Characteristic** |
|---------:|------------------------------------------------------------|
| 15-14 | Reserved (set to 0) |
| 13 | RTS |
| 12-8 | Baud Rate (see below) |
| 7 | DTR |
| 6 | XON/XOFF Flow Control |
| 5 | 1 = Stick Parity(Mark/Space), 0 = Normal Parity (odd/even) |
| 4 | 1 = Even/Space, 0 = Odd/Mark |
| 3 | Parity Enable (set for true) |
| 2 | Stop Bits (set for true) |
| 1-0 | Data Bits (5-8 encoded as 0-3) |
The 5-bit Baud Rate value (V) is encoded as V = 75 * 2^X * 3^Y. The
bits are defined as YXXXX.