Difference between revisions of "Debug device"
From MSX Game Library
| Line 12: | Line 12: | ||
│ │ └───┴────────────────── Output mode (0 = OFF, 1 = single byte, 2 = multi byte) | │ │ └───┴────────────────── Output mode (0 = OFF, 1 = single byte, 2 = multi byte) | ||
│ └────────────────────────── Line feed mode (0 = line feed at mode change, 1 = no line feed) | │ └────────────────────────── Line feed mode (0 = line feed at mode change, 1 = no line feed) | ||
| − | └────────────────────────────── Functionality (0 = output, 1 = | + | └────────────────────────────── Functionality (0 = output, 1 = command) |
----------------------------------------------------------------------------- | ----------------------------------------------------------------------------- | ||
| Line 32: | Line 32: | ||
----------------------------------------------------------------------------- | ----------------------------------------------------------------------------- | ||
| − | Functionality = | + | Functionality = command |
----------------------------------------------------------------------------- | ----------------------------------------------------------------------------- | ||
7 6 5 4 3 2 1 0 | 7 6 5 4 3 2 1 0 | ||
| − | : └───┴───┴───┴───┴───┴───┴── | + | : └───┴───┴───┴───┴───┴───┴── Command ID (0x7F = break point) |
</pre> | </pre> | ||
Revision as of 18:37, 27 July 2023
Proposal to improve the debugging protocol used by openMSX pseudo-device.
Based on: https://openmsx.org/manual/user.html#debugdevice
Improvement
----------------------------------------------------------------------------- Port 0x2E - Mode Set Register ----------------------------------------------------------------------------- 7 6 5 4 3 2 1 0 │ │ │ │ └───┴───┴───┴── Mode-specific parameters │ │ └───┴────────────────── Output mode (0 = OFF, 1 = single byte, 2 = multi byte) │ └────────────────────────── Line feed mode (0 = line feed at mode change, 1 = no line feed) └────────────────────────────── Functionality (0 = output, 1 = command) ----------------------------------------------------------------------------- Functionality = output, Output mode = single byte ----------------------------------------------------------------------------- 7 6 5 4 3 2 1 0 │ │ │ │ │ │ │ └── Hexadecimal mode (0 = OFF, 1 = ON) │ │ │ │ │ │ └────── Binary mode (0 = OFF, 1 = ON) │ │ │ │ │ └────────── Decimal mode (0 = OFF, 1 = ON) : : : : └────────────── ASCII mode (0 = OFF, 1 = ON) ----------------------------------------------------------------------------- Functionality = output, Output mode = multi byte ----------------------------------------------------------------------------- 7 6 5 4 3 2 1 0 │ │ │ │ │ │ └───┴── Mode (0 = hex, 1 = binary, 2 = decimal, 3 = ASCII mode) │ │ │ │ │ └────────── Data width (0 = 8 bits; 1 = 16 bits) : : : : └────────────── Signed (0 = unsigned, 1 = signed) ----------------------------------------------------------------------------- Functionality = command ----------------------------------------------------------------------------- 7 6 5 4 3 2 1 0 : └───┴───┴───┴───┴───┴───┴── Command ID (0x7F = break point)