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c0bd238d54
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New bootsect program to dump bios data area, aid for debugging hw
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2020-12-15 20:16:42 +00:00 |
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c06c6ac918
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fat vbr: fix incorrect addition of partition offset
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2020-10-25 14:22:53 +00:00 |
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50aa6e4eec
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Use uppercase non-struct constants for BPB
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2020-10-25 09:15:33 +00:00 |
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dc6035fe9d
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Protypical implementation of DPT copying
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2020-10-24 22:50:23 +00:00 |
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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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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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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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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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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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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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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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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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1b42f1a480
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Implement calculation for FAT position
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2020-05-10 16:47:48 +00:00 |
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36f4673c91
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Another attempt on disk i/o
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2020-05-02 23:57:23 +02:00 |
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404825387b
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mbr: make use of BPB includes
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2020-04-30 20:22:14 +02:00 |
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b73bfbe043
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Split out kernel components in kernel/
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2020-04-27 15:56:41 +02:00 |
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2d949a01f8
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Implement whacky first version for 25h disk read
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2020-04-26 23:14:34 +02:00 |
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43e5cd6379
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Direct console input: Dont return non-ascii keypresses
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2020-04-25 21:54:15 +02:00 |
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da41f6b0e2
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Rework early startup and fix bss memory reservation
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2020-04-23 21:49:10 +02:00 |
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4804bf28ea
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Place variables into area after binary
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2020-04-23 21:36:20 +02:00 |
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3619a20703
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Implement some console i/o
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2020-04-23 21:35:28 +02:00 |
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035b69db10
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fat.bs: Implement correctly for FAT12
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2020-04-22 21:45:40 +02:00 |
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34ef468aa9
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fat.bs: Smaller BPB size when not FAT32
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2020-04-22 21:45:06 +02:00 |
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abc7b563cd
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Revamp MBR
New features:
- ES:DI (potential PnP structure) is preserved
- FAT detection now works by checking for BPB values
- Uses booterr procedure
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2020-04-21 23:27:00 +02:00 |
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bbfcd42f61
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Set up interrupt table at startup directly (less code), not calling setint
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2020-04-21 20:22:42 +02:00 |
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f8788720f5
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Implement int 28h: Idle callout
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2020-04-20 19:21:02 +02:00 |
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40065266f3
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Implement int 29h: Fast console output
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2020-04-20 19:20:43 +02:00 |
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c5088789f9
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Proof kernel against being invoked via 0x7C0:0
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2020-04-19 15:14:10 +02:00 |
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97f26c1f89
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Remove stack switching, implement some syscalls
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2020-04-19 00:35:31 +02:00 |
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c1c012c5fc
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Make getint and setint reuse cs segment
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2020-04-18 23:44:16 +02:00 |
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4a92c4bc1e
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Drop MCBs as mean to manage memory
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2020-04-18 22:59:46 +02:00 |
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6c165f40c0
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Create basic MCB at boot
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2020-04-17 01:24:23 +02:00 |
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70a675442a
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Reorder disk access and fix missing si setting
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2020-04-16 23:04:06 +02:00 |
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27e4dec580
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Implement loading BPB from media
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2020-04-15 23:51:07 +02:00 |
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23ddd6b41a
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Implement some PoC of reading from disk
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2020-04-15 00:17:58 +02:00 |
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6b49a20865
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Implement syscall subfunction jump table
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2020-04-13 18:03:54 +02:00 |
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