Make sure unused parts of the VKernelBuf are zero-filled; this will

be important for RLL compression.

diff --git a/parseconfig.inc b/parseconfig.inc
index 1f6ebc6..3b6d111 100644 (file)
--- a/parseconfig.inc
+++ b/parseconfig.inc
@@ -86,7 +86,10 @@ pc_ipappend: call getint
 pc_localboot:  call getint
                cmp word [VKernelCtr],byte 0    ; ("label" section only)
                je .err
-               mov [VKernelBuf+vk_rname], byte 0       ; Null kernel name
+               mov di,VKernelBuf+vk_rname
+               xor ax,ax
+               mov cx,FILENAME_MAX
+               rep stosb                       ; Null kernel name
                mov [VKernelBuf+vk_rname+1], bx ; Return type
 .err:          ret
 %endif
@@ -236,6 +239,10 @@ pc_fkey:   push ax
 ; "label" command
 ;
 pc_label:      call commit_vk                  ; Commit any current vkernel
+               mov di,VKernelBuf               ; Erase the vkernelbuf for better compression
+               mov cx,vk_size >> 1
+               xor ax,ax
+               rep stosw
                call pc_getline
                mov di,VKernelBuf+vk_vname
                call mangle_name                ; Mangle virtual name
@@ -292,6 +299,15 @@ parse_config:
 ; commit_vk: Store the current VKernelBuf into buffer segment
 ;
 commit_vk:
+               ; For better compression, clean up the append field
+               mov ax,[VKernelBuf+vk_appendlen]
+               mov di,VKernelBuf+vk_append
+               add di,ax
+               mov cx,max_cmd_len+1
+               sub cx,ax
+               xor ax,ax
+               rep stosb
+
                cmp word [VKernelCtr],byte 0
                je cvk_ret                      ; No VKernel = return
                cmp word [VKernelCtr],max_vk    ; Above limit?