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| author | Richard Qin <richard.qin.x@gmail.com> | 2026-11-10 01:16:40 +0800 |
|---|---|---|
| committer | Richard Qin <richard.qin.x@gmail.com> | 2026-11-10 01:16:40 +0800 |
| commit | 4a9624da0c7cf0c27a00e1ff497d13f2e4a0d03e (patch) | |
| tree | 91b95e736fa08a071e7814872fc822c2d3fcd682 /mubios/core/bda.c | |
| parent | 9f45c30789b6133d4b5fb4ef07f0818a3ea4de48 (diff) | |
| download | rcc-project-4a9624da0c7cf0c27a00e1ff497d13f2e4a0d03e.tar.gz rcc-project-4a9624da0c7cf0c27a00e1ff497d13f2e4a0d03e.tar.xz | |
[mubios] Implement serial input and BIOS console key handling
Implement UART receive, transmit timeouts, configuration and status reporting for INT 14h functions 00h-03h. Initialize the BDA serial timeout and expose the driver interfaces.
Translate terminal characters and CSI/SS3 escape sequences into BIOS keyboard events for INT 16h. Add blocking reads, non-consuming status queries, enhanced key reads and keyboard buffer insertion.
Diffstat (limited to 'mubios/core/bda.c')
| -rw-r--r-- | mubios/core/bda.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mubios/core/bda.c b/mubios/core/bda.c index 5aad85c..ddcedb7 100644 --- a/mubios/core/bda.c +++ b/mubios/core/bda.c @@ -24,6 +24,8 @@ extern u8 __ebda_start[]; #define BDA_COM1_OFFSET 0x0000u +#define BDA_COM_TIMEOUT_OFFSET 0x007Cu +#define BIOS_COM_TIMEOUT 0x0Au #define BDA_LPT1_OFFSET 0x0008u static void @@ -47,6 +49,7 @@ bda_init (void) store_u16 (bda + BDA_EQUIPMENT_OFFSET, 0x4227u); store_u16 (bda + BDA_COM1_OFFSET, 0x03F8u); + bda[BDA_COM_TIMEOUT_OFFSET] = BIOS_COM_TIMEOUT; store_u16 (bda + BDA_LPT1_OFFSET, 0x0378u); store_u16 (bda + BDA_CONVENTIONAL_MEMORY_OFFSET, (u16)(ebda_base >> 10)); |