diff options
| author | Kartik K. Agaram <vc@akkartik.com> | 2021-08-31 22:49:27 -0700 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2021-08-31 23:03:34 -0700 |
| commit | b8afd4becf993f5f868f05c4f9e5fcb87be9adb2 (patch) | |
| tree | 48f1d7c7d92e7aa590078ef16323f34ff75c559f /translate_emulated | |
| parent | 281f38a7c279087e586890730553612d0378847f (diff) | |
| download | mu-b8afd4becf993f5f868f05c4f9e5fcb87be9adb2.tar.gz | |
start hacky experiment to support combining chars
https://en.wikipedia.org/wiki/Combining_character The plan: just draw the combining character in the same space as the previous character. This will almost certainly not work for some Unicode blocks (tibetan?) This commit only changes the data/memory/disk model to make some space. As always in Mu, we avoid bit-mask tricks even if that wastes memory.
Diffstat (limited to 'translate_emulated')
| -rwxr-xr-x | translate_emulated | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/translate_emulated b/translate_emulated index da1b44e6..87d54bda 100755 --- a/translate_emulated +++ b/translate_emulated @@ -11,7 +11,7 @@ set -v export DISK=20160 # 20*16*63 512-byte sectors = almost 10MB dd if=/dev/zero of=code.img count=$DISK status=none # code: sectors 0-8999 -# font: sectors 9000-10079 (1080 sectors = space enough for 16k glyphs (1080 * 512 / 33 bytes per glyph)) +# font: sectors 9000-10079 (1080 sectors = space enough for 16k glyphs (1080 * 512 / 34 bytes per glyph)) export FONT=9000 # keep this sync'd with boot.subx # debug: sector 10080 onwards export DEBUG=10080 @@ -78,6 +78,18 @@ dd if=labels of=code.img seek=$DEBUG conv=notrunc status=none # keep this sync' ## Font data at another well-defined location cat font.subx |sed 's,/[^ ]*,,' |linux/hex > a.font +if [ `stat --printf="%s" a.font` -ge 262144 ] # 0x200 sectors * 512 bytes per sector (keep this sync'd with boot.subx) +then + echo "font won't all be loaded on boot" + exit 1 +fi + +if [ `stat --printf="%s" a.font` -ge 14680064 ] # 0x00e00000 = 0x00f00000 - 0x00100000 +then + echo "font is so large it overlaps the ISA memory hole; see https://wiki.osdev.org/Memory_Map_(x86)" + exit 1 +fi + if [ `stat --printf="%s" a.font` -ge $(( ($DEBUG - $FONT) * 512 )) ] then echo "font will overwrite debug info in disk" |