Slim Corona v1 - v2 Install Guide (RGH2+)

RGH2+ install guide for Slim Corona v1–v2 consoles using the CR4 XL. You can have the absolute latest dashboard version installed if you wish.

Recommended Hardware

(This is what I use myself in my own personal installs)

• CR4 XL
• CR4 Trinity QSB kit
• Double Shielded Pro CPU RST cable — Slim
• JR Programmer v2 (a v1, v1.1, NAND-X, or even a DemoN also works)

The CR4 XL board comes with wires and tuning caps (10pf, 22pf, 30pf, 47pf, 68pf, 82pf, 100pf). I like the double shielded pro cables Xecuter makes because they give a perfectly grounded line, so you're guaranteed a clean wave.

Default DIP Settings (S1)

This gives dead-center timings for Corona. Feel free to set DIP 3 to OFF and/or add a cap to get maximum performance. You really can't go wrong — it's a solid setup.

Postbit Jumpers (P1)

These fine-tune the resistor on Postbit. The jumper should be set to 0 ohms by default. In a very few instances a 10-ohm or 100-ohm resistor was required to shape a perfect wave.

QSB Kit Install

This is the QSB kit for Corona installs. The CR4 XL code was designed and tuned with these installed and they're highly recommended for a perfect install. They also include all the necessary connectors for NAND-X, JR-Programmer, USB COMMS cable, RATER, etc.

CR4 and QSB installed:

CPU_RST Point (Blue Wire)

Flip the board. We tested all the CPU_RST points — C5R11 consistently gave the best results with CR4, especially when using the Xecuter Double Shielded Pro cable or the IPEX CPU_RST cable. The IPEX cable is especially nice as it's super neat and tidy too.

Optional: Permanent External NAND Access

If you want permanent external access to the NAND, hook up the QSB EXT V3 adapter.