NEO-D0: Difference between revisions
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m (→Pinout) |
(added note for typo, and corrected signal name) |
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{{Pinout|NEO-D0|640}} | {{Pinout|NEO-D0|640}} | ||
Note: The schematic has a typo and shows 4116CS instead of 6116CS. | |||
=Internal schematic= | =Internal schematic= | ||
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* {{Sig|BNK*|BNK*}}: [[Memory card]] upper address lines to {{Chipname|NEO-E0}} | * {{Sig|BNK*|BNK*}}: [[Memory card]] upper address lines to {{Chipname|NEO-E0}} | ||
* {{Sig|A4|A4}}: 68k address line for decoding | * {{Sig|A4|A4}}: 68k address line for decoding | ||
* {{Sig| | * {{Sig|6116CS|6116CS}}: [[Z80 RAM]] select | ||
* 2610*: YM2610 control outputs | * 2610*: YM2610 control outputs | ||
* {{Sig|OUT*|OUT*}}: Joypad outputs | * {{Sig|OUT*|OUT*}}: Joypad outputs | ||
Revision as of 02:08, 17 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
Edit this pinout
Note: The schematic has a typo and shows 4116CS instead of 6116CS.
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