Changeset e9b317fd0dc87dc93a49bc40520f4bdd0264d746 for com32/lib/sys/ansicon_write.c

Timestamp:

08/11/09 16:20:45 (3 years ago)

Author:

Pierre-Alexandre Meyer <pierre@…>

Children:

9c111b3eb8f35bae1f6268eaa1b5f1808acd7d66

Parents:

77632adf09dbf7d4d72ce3763566f1dade3bb0e2

git-author:

Pierre-Alexandre Meyer <pierre@mouraf.org> / 2009-08-11T08:58:19Z-0700

git-committer:

Pierre-Alexandre Meyer <pierre@mouraf.org> / 2009-08-11T09:20:45Z-0700

Message:

ansicon: allow to pass page # to write functions

Some video modes support up to 8 different pages, the current one being
stored at 0x462.

The display page value is passed in BH when invoking the INT 10h Video
Service routines. This patch changes the interface of ansicon_write_char
and ansicon_set_cursor to allow the caller to specify the page.

Signed-off-by: Pierre-Alexandre Meyer <pierre@…>

Files:

• com32/lib/sys/ansicon_write.c (modified) (4 diffs)

com32/lib/sys/ansicon_write.c

@@ -45 +45 @@
 
 static void ansicon_erase(const struct term_state *, int, int, int, int);
-static void ansicon_write_char(int, int, uint8_t, const struct term_state *);
+static void ansicon_write_char(int, int, int, uint8_t, const struct term_state *);
 static void ansicon_showcursor(const struct term_state *);
 static void ansicon_scroll_up(const struct term_state *);
-static void ansicon_set_cursor(int, int, int);
+static void ansicon_set_cursor(int, int, int, int);
 
 static struct term_state ts;
@@ -65 +65 @@
     .op = &__ansicon_ops
 };
-
-#define BIOS_CURXY ((struct curxy *)0x450)      /* Array for each page */
-#define BIOS_ROWS (*(uint8_t *)0x484)   /* Minus one; if zero use 24 (= 25 lines) */
-#define BIOS_COLS (*(uint16_t *)0x44A)
-#define BIOS_PAGE (*(uint8_t *)0x462)
 
 /* Reference counter to the screen, to keep track of if we need
@@ -177 +172 @@
 }
 
-static void ansicon_set_cursor(int x, int y, int visible)
-{
-    const int page = BIOS_PAGE;
+static void ansicon_set_cursor(int x, int y, int page, int visible)
+{
     struct curxy xy = BIOS_CURXY[page];
     static com32sys_t ireg;
@@ -194 +188 @@
 }
 
-static void ansicon_write_char(int x, int y, uint8_t ch,
+static void ansicon_write_char(int x, int y, int page, uint8_t ch,
                                const struct term_state *st)
 {
     static com32sys_t ireg;
 
-    ansicon_set_cursor(x, y, 0);
+    ansicon_set_cursor(x, y, 0, page);
 
     ireg.eax.b[1] = 0x09;
     ireg.eax.b[0] = ch;
-    ireg.ebx.b[1] = BIOS_PAGE;
+    ireg.ebx.b[1] = page;
     ireg.ebx.b[0] = ansicon_attribute(st);
     ireg.ecx.w[0] = 1;