pub const xosc_freq = 12_000_000;

// TODO: improve interface so that user can use a custom implementation and
// automatically checksum it.
pub export const _BOOT2: [256]u8 linksection(".boot2") = [_]u8{
    0x00, 0xb5, 0x32, 0x4b, 0x21, 0x20, 0x58, 0x60,
    0x98, 0x68, 0x02, 0x21, 0x88, 0x43, 0x98, 0x60,
    0xd8, 0x60, 0x18, 0x61, 0x58, 0x61, 0x2e, 0x4b,
    0x00, 0x21, 0x99, 0x60, 0x02, 0x21, 0x59, 0x61,
    0x01, 0x21, 0xf0, 0x22, 0x99, 0x50, 0x2b, 0x49,
    0x19, 0x60, 0x01, 0x21, 0x99, 0x60, 0x35, 0x20,
    0x00, 0xf0, 0x44, 0xf8, 0x02, 0x22, 0x90, 0x42,
    0x14, 0xd0, 0x06, 0x21, 0x19, 0x66, 0x00, 0xf0,
    0x34, 0xf8, 0x19, 0x6e, 0x01, 0x21, 0x19, 0x66,
    0x00, 0x20, 0x18, 0x66, 0x1a, 0x66, 0x00, 0xf0,
    0x2c, 0xf8, 0x19, 0x6e, 0x19, 0x6e, 0x19, 0x6e,
    0x05, 0x20, 0x00, 0xf0, 0x2f, 0xf8, 0x01, 0x21,
    0x08, 0x42, 0xf9, 0xd1, 0x00, 0x21, 0x99, 0x60,
    0x1b, 0x49, 0x19, 0x60, 0x00, 0x21, 0x59, 0x60,
    0x1a, 0x49, 0x1b, 0x48, 0x01, 0x60, 0x01, 0x21,
    0x99, 0x60, 0xeb, 0x21, 0x19, 0x66, 0xa0, 0x21,
    0x19, 0x66, 0x00, 0xf0, 0x12, 0xf8, 0x00, 0x21,
    0x99, 0x60, 0x16, 0x49, 0x14, 0x48, 0x01, 0x60,
    0x01, 0x21, 0x99, 0x60, 0x01, 0xbc, 0x00, 0x28,
    0x00, 0xd0, 0x00, 0x47, 0x12, 0x48, 0x13, 0x49,
    0x08, 0x60, 0x03, 0xc8, 0x80, 0xf3, 0x08, 0x88,
    0x08, 0x47, 0x03, 0xb5, 0x99, 0x6a, 0x04, 0x20,
    0x01, 0x42, 0xfb, 0xd0, 0x01, 0x20, 0x01, 0x42,
    0xf8, 0xd1, 0x03, 0xbd, 0x02, 0xb5, 0x18, 0x66,
    0x18, 0x66, 0xff, 0xf7, 0xf2, 0xff, 0x18, 0x6e,
    0x18, 0x6e, 0x02, 0xbd, 0x00, 0x00, 0x02, 0x40,
    0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x07, 0x00,
    0x00, 0x03, 0x5f, 0x00, 0x21, 0x22, 0x00, 0x00,
    0xf4, 0x00, 0x00, 0x18, 0x22, 0x20, 0x00, 0xa0,
    0x00, 0x01, 0x00, 0x10, 0x08, 0xed, 0x00, 0xe0,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x74, 0xb2, 0x4e, 0x7a,
};