2 # --register-prefix-optional --bitwise-or
4 .macro ldarg arg, stacksz, reg
5 move.l (4 + \arg * 4 + \stacksz)(%sp), \reg
8 .macro ldargw arg, stacksz, reg
9 move.w (4 + \arg * 4 + 2 + \stacksz)(%sp), \reg
12 .global burn10 /* u16 val */
20 .global write16_x16 /* u32 a, u16 count, u16 d */
41 # read single phase from controller
46 move.b #0x40,(0xa10003)
51 move.b #0x00,(0xa10003)
52 andi.w #0x3f,d1 /* 00CB RLDU */
56 andi.w #0xc0,d0 /* SA00 0000 */
62 eor.w d0,d1 /* changed btns */
63 move.w d0,d7 /* old val */
65 and.w d0,d1 /* what changed now */
69 .global write_and_read1 /* u32 a, u16 d, void *dst */
81 .global move_sr /* u16 sr */
87 .global move_sr_and_read /* u16 sr, u32 a */
95 .global memcpy_ /* void *dst, const void *src, u16 size */
102 move.b (a1)+, (a0)+ /* not in a hurry */
106 .global memset_ /* void *dst, int d, u16 size */
113 move.b d1, (a0)+ /* not in a hurry */
121 movem.l d2-d7/a2, -(sp)
122 movea.l #0xc00007, a0
123 movea.l #0xc00008, a1
124 movea.l #0xff0000, a2
125 moveq.l #0, d4 /* d4 = count */
126 moveq.l #0, d5 /* d5 = vcnt_expect */
128 move.l #1<<(3+16), d7 /* d7 = SR_VB */
131 beq 0b /* not blanking */
134 bne 0b /* blanking */
139 bne 0b /* not line 0 */
143 move.l d6, (a2)+ /* d0 = old */
146 move.b (a1), d2 /* 8 d2 = vcnt */
147 cmp.b (a1), d2 /* 8 reread for corruption */
148 bne 0b /* 10 on changing vcounter? */
149 cmp.b d2, d5 /* 4 vcnt == vcnt_expect? */
151 move.l (a0), d0 /* 12 */
155 addq.l #1, d4 /* count++ */
158 bne 2f /* vcnt == vcnt_expect + 1 */
161 and.l d7, d1 /* (old ^ val) & vb */
163 move.l d0, d6 /* old = val */
166 2: /* vcnt jump or vb change */
167 move.l d6, (a2)+ /* *ram++ = old */
168 move.l d0, (a2)+ /* *ram++ = val */
169 move.b d2, d5 /* vcnt_expect = vcnt */
170 move.l d0, d6 /* old = val */
176 bne 1b /* still in VB */
178 move.l d0, (a2)+ /* *ram++ = val */
179 move.l d4, (a2)+ /* *ram++ = count */
181 movem.l (sp)+, d2-d7/a2
186 move.w d0, -(sp) /* 8 */
187 move.w (0xc00008).l, d0 /* 16 */
188 addq.w #1, (0xf000).w /* 16 */
189 tst.w (0xf002).w /* 12 */
191 move.w d0, (0xf002).w /* 12 */
193 move.w d0, (0xf004).w /* 12 */
194 move.w (sp)+, d0 /* 8 */
196 .global test_hint_end
201 move.w d0, -(sp) /* 8 */
202 move.w (0xc00008).l, d0 /* 16 */
203 addq.w #1, (0xf008).w /* 16 */
204 tst.w (0xf00a).w /* 12 */
206 move.w d0, (0xf00a).w /* 12 */
208 move.w d0, (0xf00c).w /* 12 */
209 move.w (sp)+, d0 /* 8 */
211 .global test_vint_end
215 # vim:filetype=asmM68k:ts=4:sw=4:expandtab