Memory mapped registers: Difference between revisions
(Created page with "{| border="1" |Address |Name |Size |Read |Write |- |$300000 |REG_P1CNT |Byte |Player 1 controls (active low) {{8BitRegister|D|1|C|1|B|1|A|1|Right|1|Left|1|Down|1|Up|1}} |? |- |$3…") |
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$FF016F (byte) disable_irq_w | $FF016F (byte) disable_irq_w | ||
$FF0183 (byte) z80_enable | $FF0183 (byte) z80_enable | ||
[[Category:CPUs]] | |||
[[Category:Code]] | |||
Revision as of 19:19, 10 February 2011
| Address | Name | Size | Read | Write | ||||||||||||||||||
| $300000 | REG_P1CNT | Byte | Player 1 controls (active low)
|
? | ||||||||||||||||||
| $300001 | REG_DIPSW | Byte | Dipswitches (active low)
|
Kick watchdog | ||||||||||||||||||
| $300081 | ? | Byte? | ? | ? | ||||||||||||||||||
| $320000 | REG_SOUND | Byte | Out to Z80 | In from Z80 | ||||||||||||||||||
| $320001 | REG_STATUS_A | Byte |
|
? | ||||||||||||||||||
| $340000 | REG_P2CNT | Byte | Player 2 controls (active low)
|
? | ||||||||||||||||||
| $380000 | REG_STATUS_B | Byte |
|
? | ||||||||||||||||||
| $380000 | ? | Byte | ? | MAME select_controller | ||||||||||||||||||
| $380030 | ? | Byte | ? | MAME set_output_latch | ||||||||||||||||||
| $380040 | ? | Byte | ? | MAME set_output_data | ||||||||||||||||||
| $380050 | ? | Byte | ? | MAME upd4990a_control_16_w | ||||||||||||||||||
| $380001 | ? | Byte | ? | Joypad ports outputs
| ||||||||||||||||||
| Address | Name | Size | Read | Write |
| $3A0001 | REG_DISPENABL | Byte | Invalid | Normal video output |
| $3A0011 | REG_DISPDSABL | Byte | Invalid | Darken video output |
| $3A0003 | ? | Byte | Invalid | Use the BIOS vector table |
| $3A0013 | REG_SWPROM | Byte | Invalid | Use the cart's vector table |
| See ASM Defines. | ||||
| $3A000B | REG_BRDFIX | Byte | Invalid | Use the embeded fix tileset (SFIX) |
| $3A001B | REG_CRTFIX | Byte | Invalid | Use the cart's fix tileset |
| $3A000D | REG_SRAMLOCK | Byte | Invalid | Write-protects the SRAM (MVS) |
| $3A001D | REG_SRAMULOCK | Byte | Invalid | Unprotects SRAM (MVS) |
| $3A000F | REG_PALBANK1 | Byte | Invalid | Use palette bank 1 |
| $3A001F | REG_PALBANK0 | Byte | Invalid | Use palette bank 0 |
Needs translation:
| Address | Name | Size | Read | Write |
| $3C0000 | REG_VRAMADDR | Word | Read VRAM (address isn't changed) | Sets VRAM address |
| $3C0002 | REG_VRAMRW | Word | Read VRAM (address isn't changed) | Write VRAM |
| $3C0004 | Word | REG_VRAMINC | Reads VRAM address modulo | Sets VRAM address modulo (signed) |
| $3C0006 | Word | REG_HBLANKCNT | 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Compteur de ligne vidéo (format ?) ? 1:50Hz 0:60Hz Compteur d'animation auto $00F8-$00FF : Vertical sync $0100-$010F : Top border $0110-$01EF : Active display $01F0-$01FF : Bottom border Voir ce diagramme. |
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Vitesse de l'animation auto Recharger à chaque HBlank Recharger à chaque VBlank Prochaine interruption HBlank dans x lignes Int.HBlank activée Désactiver l'animation automatique ? |
| $3C0008 | Word | REG_HBLANKPOS | Invalid | Position (pixels) à laquelle l'interruption HBlank sera déclenchée (MSB) |
| $3C000A | ? | Word | Invalid | Position (pixels) à laquelle l'interruption HBlank sera déclenchée (LSB) |
| $3C000C | REG_IRQACK | Byte | Invalid | Interrupt Acknowledge.
Obligatoire, sert de prévention anti-nesting. Toujours répondre correctement à la fin d'un interruption. 7 6 5 4 3 2 1 0 ACK VBlank ACK HBlank ACK IRQ3 |
| $3C000E
$3C000F |
? | ? | Certains émulateurs traitent cette adresse de la même façon que $3C000A.
MAME ne s'en occupe pas. Aucun jeu n'en dépend. |
La même chose. |
NeoGeo CD only (from NeoCD's source):
$FF011C (word): read: return 0xff | (region_code << 8); $FF0002 (word) $FF007E,$FF008f (word) dma_mode $FF0105 (byte) upload_type_w $FF0111 (byte) spr_disable $FF0115 (byte) fix_disable $FF0119 (byte) video_enable $FF016F (byte) disable_irq_w $FF0183 (byte) z80_enable