diff options
Diffstat (limited to 'translate')
| -rwxr-xr-x | translate | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/translate b/translate index a8831504..9c1fc38d 100755 --- a/translate +++ b/translate @@ -7,7 +7,7 @@ set -e export DISK=20160 # 20*16*63 512-byte sectors = almost 10MB dd if=/dev/zero of=code.img count=$DISK status=none # code: sectors 0-8999 -# font: sectors 9000-10079 (1080 sectors = space enough for 16k glyphs (1080 * 512 / 33 bytes per glyph)) +# font: sectors 9000-10079 (1080 sectors = space enough for 16k glyphs (1080 * 512 / 34 bytes per glyph)) export FONT=9000 # keep this sync'd with boot.subx # debug: sector 10080 onwards export DEBUG=10080 @@ -74,6 +74,18 @@ dd if=labels of=code.img seek=$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" |