From cb099e1f0467230e6e835f97d0e4c3fd43716e84 Mon Sep 17 00:00:00 2001
From: quinnyo <3379314+quinnyo@users.noreply.github.com>
Date: Sun, 19 Apr 2026 05:34:28 +1000
Subject: [PATCH] Add MBC30 mapper

---
 src/MBC3.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/MBC3.md b/src/MBC3.md
index 6eeee083..90aaad34 100644
--- a/src/MBC3.md
+++ b/src/MBC3.md
@@ -92,3 +92,12 @@ Year-10000-Proof, provided that the cartridge gets used at least every
 
 When accessing the RTC Registers, it is recommended to wait 4 µs
 (4 M-cycles in Normal Speed Mode) between any separate accesses.
+
+
+# MBC30
+
+(4 MiB ROM, 64 KiB RAM, timer)
+
+The MBC30 is practically identical to MBC3 in operation, but is capable of addressing twice as much memory for both ROM and RAM.
+The only title to be shipped with the MBC30 mapper was _Pocket Monsters: Crystal Version_ in Japan, with the various worldwide versions using MBC3.
+