From 3aefeeb723b8822916fb39b7c32551c35c06e32f Mon Sep 17 00:00:00 2001
From: Alejandro Sior <aho@sior.be>
Date: Sat, 21 May 2022 14:04:42 +0200
Subject: boot: reorganize bios and drive modules

---
 bios/boot.ha | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 bios/boot.ha

(limited to 'bios/boot.ha')

diff --git a/bios/boot.ha b/bios/boot.ha
new file mode 100644
index 0000000..e165f5a
--- /dev/null
+++ b/bios/boot.ha
@@ -0,0 +1,12 @@
+// Address of a 4096 bytes workspace that is located below 0xFFFFF and can be used to store the results
+// of various bios calls
+export const @symbol("_ws") ws: [4096]u8;
+
+// Boot drive number as given by the BIOS at boot time
+export const @symbol("drive_no") drive_number: u8;
+
+// Amount of sectors per track that the boot drive has
+export const @symbol("drive_spt") drive_sectors_per_track: u8;
+
+// Amount of heads that the boot drive has
+export const @symbol("drive_heads") drive_heads: u8;
-- 
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