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/*
NatFeat host CD-ROM access, MetaDOS BOS driver entry points
ARAnyM (C) 2003 Patrice Mandin
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
.text
.globl _asm_init_devices, _init_devices
.globl _asm_cd_open, _cd_open
.globl _asm_cd_close, _cd_close
.globl _asm_cd_read, _cd_read
.globl _asm_cd_write, _cd_write
.globl _asm_cd_seek, _cd_seek
.globl _asm_cd_status, _cd_status
.globl _asm_cd_ioctl, _cd_ioctl
.globl _asm_cd_startaudio, _cd_startaudio
.globl _asm_cd_stopaudio, _cd_stopaudio
.globl _asm_cd_setsongtime, _cd_setsongtime
.globl _asm_cd_gettoc, _cd_gettoc
.globl _asm_cd_discinfo, _cd_discinfo
/*--- Function to create a bos header ---*/
_asm_init_devices:
/*
Input:
d0.w physical drive letter
d1.w dma channel
Forward:
0(sp) physical drive letter
4(sp) dma channel
*/
andl #0xffff,d1
movl d1,sp@-
andl #0xffff,d0
movl d0,sp@-
bsr _init_devices
addql #8,sp
rts
/*--- MetaDOS BOS functions frontends ---*/
_asm_cd_open:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
4(sp) metaopen_t *metaopen
Forward:
0(sp) metados_bosheader_t *device
4(sp) metaopen_t *metaopen
*/
movl sp,a1
movl 4(a1),sp@-
movl a0,sp@-
bsr _cd_open
addql #8,sp
rts
_asm_cd_close:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
Forward:
0(sp) metados_bosheader_t *device
*/
movl a0,sp@-
bsr _cd_close
addql #4,sp
rts
_asm_cd_read:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
4(sp) void *buffer;
8(sp) unsigned long first
12(sp) unsigned short length
Forward:
0(sp) metados_bosheader_t *device
4(sp) void *buffer;
8(sp) unsigned long first
12(sp) unsigned long length
*/
movl sp,a1
clrl d0
movw 12(a1),d0
movl d0,sp@-
movl 8(a1),sp@-
movl 4(a1),sp@-
movl a0,sp@-
bsr _cd_read
lea sp@(16),sp
rts
_asm_cd_write:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
4(sp) void *buffer;
8(sp) unsigned long first
12(sp) unsigned short length
Forward:
0(sp) metados_bosheader_t *device
4(sp) void *buffer;
8(sp) unsigned long first
12(sp) unsigned long length
*/
movl sp,a1
clrl d0
movw 12(a1),d0
movl d0,sp@-
movl 8(a1),sp@-
movl 4(a1),sp@-
movl a0,sp@-
bsr _cd_write
lea sp@(16),sp
rts
_asm_cd_seek:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
4(sp) unsigned long offset
Forward:
0(sp) metados_bosheader_t *device
4(sp) unsigned long offset
*/
movl sp,a1
movl 4(a1),sp@-
movl a0,sp@-
bsr _cd_seek
addql #8,sp
rts
_asm_cd_status:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
4(sp) metados_bosstatus_t *extended_status;
Forward:
0(sp) metados_bosheader_t *device
4(sp) metados_bosstatus_t *extended_status;
*/
movl sp,a1
movl 4(a1),sp@-
movl a0,sp@-
bsr _cd_status
addql #8,sp
rts
_asm_cd_ioctl:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
4(sp) unsigned long magic
8(sp) unsigned short opcode
10(sp) void *buffer;
Forward:
0(sp) metados_bosheader_t *device
4(sp) unsigned long magic
8(sp) unsigned long opcode
12(sp) void *buffer;
*/
movl sp,a1
movl 10(a1),sp@-
clrl d0
movw 8(a1),d0
movl d0,sp@-
movl 4(a1),sp@-
movl a0,sp@-
bsr _cd_ioctl
lea sp@(16),sp
rts
_asm_cd_startaudio:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
4(sp) unknown parameter
6(sp) unsigned char *tracks
Forward:
0(sp) metados_bosheader_t *device
4(sp) unknown parameter
8(sp) unsigned char *tracks
*/
movl sp,a1
movl 6(a1),sp@-
clrl d0
movw 4(a1),d0
movl d0,sp@-
movl a0,sp@-
bsr _cd_startaudio
lea sp@(12),sp
rts
_asm_cd_stopaudio:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
Forward:
0(sp) metados_bosheader_t *device
*/
movl a0,sp@-
bsr _cd_stopaudio
addql #4,sp
rts
_asm_cd_setsongtime:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
4(sp) unknown parameter
6(sp) start_msf
10(sp) end_msf
Forward:
0(sp) metados_bosheader_t *device
4(sp) unknown parameter
8(sp) start_msf
12(sp) end_msf
*/
movl sp,a1
movl 10(a1),sp@-
movl 6(a1),sp@-
clrl d0
movw 4(a1),d0
movl d0,sp@-
movl a0,sp@-
bsr _cd_setsongtime
lea sp@(16),sp
rts
_asm_cd_gettoc:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
4(sp) dummy
6(sp) toc_header_t *toc_header
Forward:
0(sp) metados_bosheader_t *device
4(sp) dummy
8(sp) toc_header_t *toc_header
*/
movl sp,a1
movl 6(a1),sp@-
clrl d0
movw 4(a1),d0
movl d0,sp@-
movl a0,sp@-
bsr _cd_gettoc
lea sp@(12),sp
rts
_asm_cd_discinfo:
/*
Input:
a0 metados_bosheader_t *device
0(sp) return address
4(sp) metados_bosdiscinfo_t *discinfo
Forward:
0(sp) metados_bosheader_t *device
4(sp) metados_bosdiscinfo_t *discinfo
*/
movl sp,a1
movl 4(a1),sp@-
movl a0,sp@-
bsr _cd_discinfo
addql #8,sp
rts
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