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Clean Up NVRAM Switch Terminology

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- Essentially, switch from the term "default boot" to the term "boot options".

See Issue #451
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Wayne Warthen
2024-12-05 19:01:03 -08:00
parent edd0e58031
commit f03dcf7193
16 changed files with 101 additions and 100 deletions
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Source/Doc/SystemGuide.md
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@@ -531,7 +531,7 @@ The following switch ID's are defined, and described in sections below.
| Switch Number | Name | Description |
|---------------|--------------|-----------------------------------------------|
| 0x00 | -reserved- | Reserved |
| 0x01 | Default Boot | Default boot, either a Rom App or Disk Boot |
| 0x01 | Boot Options | ROM or Disk Boot Settings |
| 0x02 | -n/a- | -n/a- high order byte of previous switch |
| 0x03 | Auto Boot | Automatically boot enabled without user input |
| 0x04 - 0xFE | -future- | Future general usage |
@@ -544,18 +544,19 @@ the bytes in NVRAM to check for authenticity before using the configuration.
|-------------|--------------|-----------------------------------|
| 0x00 | Header Byte | Header Signature Byte 'W' |
| 0x01 - 0x03 | Switch Data | Actual Switch Data |
| 0x04 | Parity Check | Parity byte to check authenticity |
| 0x04 | Parity Check | Checksum byte to check integrity |
The above data is copied into the HBIOS Configuration Block (HCB) at startup at
the location starting at CB_SWITCHES.
### Default Boot (NVSW_DEFBOOT)
### Boot Options (NVSW_BOOTOPTS)
16 bit Switch defining the default Rom application or Disk device to boot.
16 bit Switch defining the ROM application or Disk device to boot if
automatic booting is enabled.
| Bit 15 | Bits 14-8 | Bits 7-0 |
|-------------|-------------------|--------------------|
| 1 = Rom App | -undefined- | App to Boot (Char) |
| 1 = ROM App | -undefined- | App to Boot (Char) |
| 0 = Disk | Disk Unit (0-127) | Disk Slice (0-255) |
### Auto Boot (NVSW_AUTOBOOT)