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ca3eebd692
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Remove fields from BPB that are EBPB actually
This is just a trick so i can use bpb_size in the kernel later,
omitting things that are not relevant to interfacing the FS.
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2020-10-15 20:20:17 +00:00 |
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7b18c6d236
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fix bpb struc: forgot single byte for flags
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2020-10-14 20:16:43 +00:00 |
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c41782c78f
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Build drive selection logic for FCBs
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2020-10-13 20:10:23 +00:00 |
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4e779c5a22
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Lay out skeletons for FCB handling
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2020-10-11 21:33:01 +00:00 |
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31c6ef5876
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boot/kernel: print banner
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2020-09-27 15:45:19 +00:00 |
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729e6790ef
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boot/fat: Save a byte restoring DL
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2020-09-27 15:10:28 +00:00 |
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909349a4cf
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boot/fat: Shave off a byte by storing final address on stack
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2020-09-27 11:25:57 +00:00 |
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386e91b4c8
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boot/fat: Fix incorrect initialisation of dx
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2020-09-27 10:48:05 +00:00 |
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2dc6970721
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boot/fat: Use segmentation to allow up to 64Kb fat/kernel size
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2020-09-27 10:40:42 +00:00 |
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adf67d9723
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Rework fat boot sector, load FAT only once instead of partial
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2020-09-23 23:01:50 +00:00 |
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31eac279c2
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Revert to more sensible kernel.bs boot scheme
I think i should consider it a necessity that the kernel is accessible
as a regular file. This makes installing rdos on another blockdev
much easier.
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2020-09-20 19:58:19 +02:00 |
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8ed9fe7465
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Fix hdd booting using bpb struc
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2020-09-19 08:22:50 +00:00 |
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1d64c2364d
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Improve build transparency (documentation and inline version number)
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2020-09-17 08:59:22 +00:00 |
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e1bfaa5d88
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automatically use kvm if available
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2020-09-17 06:47:32 +00:00 |
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8e87cf0f75
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Load kernel from reserved sectors in fatfs
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2020-09-17 05:57:46 +00:00 |
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1ee0637eab
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Update goals
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2020-09-15 22:02:38 +02:00 |
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9cd4c04c42
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Make kernel and fat.bs use BPB struct
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2020-09-15 21:45:29 +02:00 |
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303b1756e0
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Fuck up the kernel, i have other ideas now
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2020-09-15 21:44:32 +02:00 |
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4b5993cfa9
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WIP of asm86
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2020-09-15 21:44:13 +02:00 |
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79c902c197
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kernel: Fix borked ax assignment
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2020-08-31 20:21:10 +00:00 |
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352540bd25
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kernel: First steps of calculating drive tab data from BPB
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2020-08-31 20:11:05 +00:00 |
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cc3fe6c4ee
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kernel: fix banner printing
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2020-08-27 21:01:41 +00:00 |
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f0a000b7d1
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kernel: implement diskio using drive table
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2020-08-27 20:52:16 +00:00 |
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4a294ee21c
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kernel: fix advancing of drive table pointer during drive init
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2020-08-22 23:38:11 +00:00 |
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3b39572043
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kernel: fall back to defaults if int 13h/ah=8 spews bogus data
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2020-08-22 23:36:25 +00:00 |
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ff3a59c71e
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kernel: properly loop over floppies
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2020-08-22 23:36:09 +00:00 |
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c3f22e5aea
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remove docs
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2020-08-15 21:16:50 +00:00 |
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fde87d651c
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kernel: read A: geometry from BIOS
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2020-08-15 21:15:31 +00:00 |
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734ab3852a
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Remove skeleton of rom-based kernel
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2020-08-15 21:02:30 +00:00 |
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c604fd43e7
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Remove attempt of rom-based debugger
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2020-08-15 20:59:40 +00:00 |
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d6b5792ff7
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Make dprintf the default debugging facility
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2020-08-15 20:58:40 +00:00 |
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626b7e5624
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Add struc for disk parameter table
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2020-08-15 18:30:17 +00:00 |
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a90ca60422
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Add first steps of another assembler attempt
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2020-07-19 12:07:03 +02:00 |
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5382edc2ae
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Improve ordering of binary data in kernel
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2020-07-04 10:35:38 +02:00 |
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f9b180ea57
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Implement file descriptor table and CON as file descriptor
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2020-06-28 19:01:14 +02:00 |
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65564b78af
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Start working on rom-based kernel
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2020-05-29 00:32:30 +02:00 |
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04a7087d79
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debug: First steps on instruction decoding
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2020-05-19 23:10:20 +02:00 |
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e60e49735c
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debug: Add stub for instruction decoding
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2020-05-19 18:26:22 +02:00 |
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a31e574b3a
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debug: Split commands into thematically organized files
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2020-05-18 23:43:54 +02:00 |
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8056ad5cfb
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debug: commands are now always typed uppercase
|
2020-05-18 23:12:58 +02:00 |
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d264404bb1
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debug: print register name when changing register
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2020-05-18 22:50:30 +02:00 |
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8407275ba9
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debug: Implement number parsing and editing of registers
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2020-05-18 22:35:41 +02:00 |
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a386416f28
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debug: fix check if there are arguments
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2020-05-18 20:17:58 +02:00 |
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fc1aa47039
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debug: Implement parsing of register names
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2020-05-18 20:05:06 +02:00 |
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2a7087a21f
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debug: Reduce stack usage on entry from 5 to 4 words
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2020-05-18 18:23:37 +02:00 |
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9ce6ec5476
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debug: Rework repl loop and implement help command '?'
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2020-05-17 22:46:11 +02:00 |
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31a72d594a
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debug: fix missing PnP product name string terminator
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2020-05-17 18:09:50 +02:00 |
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e30f99c1a7
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debug.rom: Allocate lowmem segment instead of full relocate
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2020-05-16 13:10:21 +00:00 |
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e217b70bb7
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Remove CP437 bitmap, i dont intend to use graphics mode for OS
|
2020-05-14 19:18:34 +00:00 |
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df9f50c29a
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Remove leftover gitmodules
|
2020-05-14 19:17:34 +00:00 |
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