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| author | hpa <hpa> | 2003-04-15 21:28:18 +0000 |
|---|---|---|
| committer | hpa <hpa> | 2003-04-15 21:28:18 +0000 |
| commit | fa1cfa8dd0bbcd08e7df4eb569647baa67e25fe0 (patch) | |
| tree | 4f82a15f8a13ba6e2e659755324264b1c1edb93c /cpuinit.inc | |
| parent | ab763517436a177edc160c73656aba35db0f368d (diff) | |
| download | syslinux-fa1cfa8dd0bbcd08e7df4eb569647baa67e25fe0.tar.gz | |
Macroize the generation of the "insufficient DOS RAM string";
Actually use the 1000h segment instead of letting it go to waste;
Set comboot_seg == real_mode_seg to save 40K
Diffstat (limited to 'cpuinit.inc')
| -rw-r--r-- | cpuinit.inc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/cpuinit.inc b/cpuinit.inc index b63ae64d..f64623ed 100644 --- a/cpuinit.inc +++ b/cpuinit.inc @@ -27,8 +27,12 @@ check_escapes: ; ; Now check that there is sufficient low (DOS) memory ; +; NOTE: Linux doesn't use all of real_mode_seg, but we use the same +; segment for COMBOOT images, which can use all 64K +; +dosram_k equ (real_mode_seg+0x1000) >> 6 ; Minimum DOS memory (K) int 12h - cmp ax,(real_mode_seg+0xa00) >> 6 + cmp ax,dosram_k jae enough_ram mov si,err_noram call writestr |