From 309cc9c2dff5664a02db799203330af8e8c16b13 Mon Sep 17 00:00:00 2001
From: Matthew Pomes <matthew.pomes@pm.me>
Date: Thu, 9 Apr 2026 07:39:51 -0500
Subject: [PATCH] Clean up startup messages

---
 src/mem.rs | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/src/mem.rs b/src/mem.rs
index e6bcf7c..675508f 100644
--- a/src/mem.rs
+++ b/src/mem.rs
@@ -1,6 +1,7 @@
 use std::{fmt, sync::Arc};
 
 use bitfield::bitfield;
+use log::info;
 
 use crate::{
     CPUMMRegisters, PPU, apu::APU, controllers::Controllers, cpu::DmaState, ppu::PPUMMRegisters,
@@ -303,6 +304,7 @@ enum SegmentId {
     ChrBank0,
     ChrBank1,
 
+    PrgRam,
     NVRam,
 }
 
@@ -358,12 +360,12 @@ impl Mapped {
         };
         let (prg_rom, rom) = rom.split_at(mapper.prg_rom_size as usize * 0x4000);
         let (chr_rom, _rom) = rom.split_at(mapper.chr_rom_size as usize * 0x2000);
-        println!("Mapper: {}/{}", mapper.mapper, mapper.sub_mapper);
-        assert_eq!(
-            mapper.prg_nv_ram_size.low_count(),
-            0,
-            "No support for PRG-RAM"
-        );
+        info!("Mapper: {}/{}", mapper.mapper, mapper.sub_mapper);
+        // assert_eq!(
+        //     mapper.prg_nv_ram_size.low_count(),
+        //     0,
+        //     "No support for PRG-RAM"
+        // );
         // assert_eq!(
         //     mapper.chr_nv_ram_size.low_count(),
         //     0,
@@ -394,6 +396,12 @@ impl Mapped {
                 0x6000,
                 mapper.prg_nv_ram_size.high_count() as u16,
             ));
+        } else if mapper.prg_nv_ram_size.low_count() > 0 {
+            cpu_segments.push(Segment::ram(
+                SegmentId::PrgRam,
+                0x6000,
+                mapper.prg_nv_ram_size.low_count() as u16,
+            ));
         }
         let mut ppu_segments = vec![
             Segment::mirror(SegmentId::VramMirror, 0x3000, 0x0F00, 0x0000),
@@ -464,7 +472,7 @@ impl Mapped {
             let prg_banks: Vec<Arc<[u8]>> =
                 prg_rom.chunks(0x4000).map(|ch| Arc::from(ch)).collect();
             for (i, b) in prg_banks.iter().enumerate() {
-                println!("{i}: {:X?}", &b[0x3FF0..]);
+                info!("{i}: {:X?}", &b[0x3FF0..]);
             }
             cpu_segments.push(Segment::rom(
                 SegmentId::PrgBank0,
@@ -476,7 +484,7 @@ impl Mapped {
                 0xC000,
                 prg_banks.last().unwrap().clone(),
             ));
-            println!("CHR_ROM: {}", chr_rom.len());
+            info!("CHR_ROM: {}", chr_rom.len());
             let chr_banks: Vec<Arc<[u8]>> =
                 chr_rom.chunks(0x1000).map(|ch| Arc::from(ch)).collect();
             if chr_rom.len() == 0 {
@@ -502,7 +510,7 @@ impl Mapped {
                 cur_prg_bank: 0,
             }
         } else {
-            todo!()
+            todo!("support mapper chip: {}/{}", mapper.mapper, mapper.sub_mapper)
         };
         Self {
             cpu: MemoryMap {