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// Struct defining the contents of the register state used
// for bios calls
export type state = struct {
@offset(0) eax: u32,
@offset(4) ebx: u32,
@offset(8) ecx: u32,
@offset(12) edx: u32,
@offset(16) edi: u32,
@offset(20) esi: u32,
@offset(24) es: u16,
};
// The set real mode registers
export let regs: state;
// The address of a 512 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;
// The boot drive number as given by the BIOS at boot time
export const @symbol("drive_no") drive_number: u8;
// The amount of sectors per track that the boot drive has
export const @symbol("drive_spt") drive_sectors_per_track: u8;
// The amount of heads that the boot drive has
export const @symbol("drive_heads") drive_heads: u8;
// Clears the BIOS mode registers
export fn clearregs() void = {
regs = state {
...
};
};
// Call a BIOS interrupt
export fn call(intno: u8) void;
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