NEO-D0: Difference between revisions
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{{ChipInfo | |||
|picture=aes_d0.jpg | |||
|pkg=QFP64R | |||
|manu=fujitsu | |||
|date=1990 ? | |||
|gates= | |||
|used_on={{PCB|MV4}} and many more... | |||
}} | |||
* Clock divider | |||
* {{Chipname|Z80}} memory and [[Z80 port map|port]] control | |||
* {{Chipname|YM2610}} interface | |||
* [[Memory card]] bank selection | |||
* [[Joypad]] outputs | |||
Maybe similar to {{Chipname|NEO-SUD}} on the NeoGeo CD. Close to the audio hardware. | |||
=Pinout= | |||
*A4: 68k address line | |||
* | {{Pinout|NEO-D0|640}} | ||
*2610*: | |||
* | |||
*SDMRD/SDMRW: Z80 | =Internal schematic= | ||
* | |||
[[File:Neo-d0_sd.png]] | |||
=Signals= | |||
* {{Sig|D*|D*}}: {{Chipname|68k}} data bus for [[joypad]] outputs | |||
* {{Sig|BNK*|BNK*}}: [[Memory card]] upper address lines to {{Chipname|NEO-E0}} | |||
* {{Sig|A4|A4}}: 68k address line for decoding | |||
* {{Sig|6116CS|6116CS}}: [[Z80 RAM]] select | |||
* 2610*: YM2610 control outputs | |||
* {{Sig|OUT*|OUT*}}: Joypad outputs | |||
* {{Sig|SDMRD|SDMRD}}: Z80 ROM/RAM read | |||
* {{Sig|SDMRW|SDMRW}}: Z80 RAM write | |||
* {{Sig|SDRD*|SDRD*}}: Z80 port read to {{Chipname|NEO-ZMC}} in cartridge | |||
* {{Sig|SDZ80CLR|SDZ80CLR}}: Clear command code in {{Chipname|NEO-C1}} | |||
* {{Sig|SDZ80RD|SDZ80RD}}: Read command code from {{Chipname|NEO-C1}} | |||
* {{Sig|SDZ80WR|SDZ80WR}}: Write reply code to {{Chipname|NEO-C1}} | |||
[[Category:Chips]] | [[Category:Chips]] | ||
Latest revision as of 14:43, 21 May 2020
| |
| Package | QFP64R |
| Manufacturer | 
|
| First use | 1990 ? |
| Used on | MV4 and many more... |
- Clock divider
- Z80 memory and port control
- YM2610 interface
- Memory card bank selection
- Joypad outputs
Maybe similar to NEO-SUD on the NeoGeo CD. Close to the audio hardware.
Pinout
Internal schematic
Signals
- D*: 68k data bus for joypad outputs
- BNK*: Memory card upper address lines to NEO-E0
- A4: 68k address line for decoding
- 6116CS: Z80 RAM select
- 2610*: YM2610 control outputs
- OUT*: Joypad outputs
- SDMRD: Z80 ROM/RAM read
- SDMRW: Z80 RAM write
- SDRD*: Z80 port read to NEO-ZMC in cartridge
- SDZ80CLR: Clear command code in NEO-C1
- SDZ80RD: Read command code from NEO-C1
- SDZ80WR: Write reply code to NEO-C1