C89 compliance, lowercase naming, iOS fix, and core option enhancements

.gitignore

@@ -31,6 +31,9 @@ jni/obj/
 *~
 .DS_Store
 
+# Local build and test scripts
+build-test.ps1
+
 # Temporary and log files
 *.tmp
 *.temp

FreeIntv_libretro.info

@@ -1,7 +1,7 @@
-display_name = "Mattel - Intellivision (FreeIntv)"
+display_name = "Mattel - Intellivision (freeintv)"
 authors = "David Richardson, Oscar Toledo G., Joe Zbiciak, Jason Carr"
 supported_extensions = "int|bin|rom"
-corename = "FreeIntv"
+corename = "freeintv"
 categories = "Emulator"
 license = "GPLv2+"
 permissions = ""

ISSUE_TEMPLATE.md

@@ -1,6 +1,6 @@
 This issue tracker is NOT for help or support. Please use the libretro forums (https://forums.libretro.com/) for those kinds of posts.
 
-BEFORE you report a bug make sure you have tried the latest buildbot version of FreeIntv or compiled it from source. Your bug might be already fixed.
+BEFORE you report a bug make sure you have tried the latest buildbot version of freeintv or compiled it from source. Your bug might be already fixed.
 
 If you are sure that it's a bug, please answer the following questions:
 - Which version of RetroArch are you using?

LICENSE

@@ -1,18 +1,18 @@
 
-FreeIntv Copyright (c) 2017-2018 David Richardson [Recompile]
+freeintv Copyright (c) 2017-2018 David Richardson [Recompile]
 
-FreeIntv is free software; you can redistribute it and/or modify
+freeintv is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 
-FreeIntv is distributed in the hope that it will be useful,
+freeintv is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License along
-with FreeIntv; if not, write to the Free Software Foundation, Inc.,
+with freeintv; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 

Makefile

@@ -45,7 +45,7 @@ endif
 
 
 CORE_DIR	+= .
-TARGET_NAME := FreeIntv
+TARGET_NAME := freeintv
 SOURCE_DIR := src
 
 ifeq (,$(findstring msvc,$(platform)))

README.md

@@ -1,11 +1,11 @@
-# FreeIntv with Onscreen Interactive Keypad Overlays
-FreeIntv is a libretro emulation core for the Mattel Intellivision designed to be compatible with joypads from the SNES era forward even if they originally required a number pad.
+# freeintv with Onscreen Interactive Keypad Overlays
+freeintv is a libretro emulation core for the Mattel Intellivision designed to be compatible with joypads from the SNES era forward even if they originally required a number pad.
 
 **Current Version**: Enhanced with onscreen interactive keypad overlays for Android, Windows, and Linux (November 24, 2025)
 
 ## Authors & Contributors
 
-FreeIntv was created by David Richardson.
+freeintv was created by David Richardson.
 The PSG and STIC emulation was made closer to hardware and optimized by Oscar Toledo G. (nanochess), who also added save states.
 
 The Intellivoice code has been contributed by Joe Zbiciak (author of jzintv), and adapted by Oscar Toledo G. (nanochess)
@@ -18,14 +18,14 @@ The Intellivoice code has been contributed by Joe Zbiciak (author of jzintv), an
 
 ## Installation
 
-**Step 1: Install FreeIntv Core**
+**Step 1: Install freeintv Core**
 - Place the compiled core file for your platform into RetroArch's `cores/` directory:
-  - Windows: `FreeIntv_libretro.dll`
-  - Linux: `FreeIntv_libretro.so`
-  - macOS: `FreeIntv_libretro.dylib`
+  - Windows: `freeintv_libretro.dll`
+  - Linux: `freeintv_libretro.so`
+  - macOS: `freeintv_libretro.dylib`
 
 **Step 2: Install the Core Info File**
-- Copy `FreeIntv_libretro.info` to RetroArch's `info/` directory
+- Copy `freeintv_libretro.info` to RetroArch's `info/` directory
 - ⚠️ The filename must match the core filename exactly (excluding the file extension)
 
 **Step 3: Add BIOS Files**
@@ -34,11 +34,11 @@ The Intellivoice code has been contributed by Joe Zbiciak (author of jzintv), an
   - `grom.bin` (Graphics ROM)
 
 **Step 4: Launch Games**
-- Load an Intellivision ROM through RetroArch using the FreeIntv core
+- Load an Intellivision ROM through RetroArch using the freeintv core
 
 ## Enabling Onscreen Interactive Overlays
 
-The FreeIntv core features onscreen interactive keypad overlays that display custom controller graphics directly on screen, allowing touch or mouse input.
+The freeintv core features onscreen interactive keypad overlays that display custom controller graphics directly on screen, allowing touch or mouse input.
 
 ### To Enable the Feature:
 

USER_GUIDE.md

@@ -1,13 +1,13 @@
-# FreeIntv with Onscreen Interactive Keypad Overlays
+# freeintv with Onscreen Interactive Keypad Overlays
 
 ## Overview
-FreeIntv is a libretro emulation core for the Mattel Intellivision designed to be compatible with joypads from the SNES era forward even if they originally required a number pad. This guide explains how to set up and use the core in RetroArch, including instructions for overlay PNG files.
+freeintv is a libretro emulation core for the Mattel Intellivision designed to be compatible with joypads from the SNES era forward even if they originally required a number pad. This guide explains how to set up and use the core in RetroArch, including instructions for overlay PNG files.
 
 **Current Version**: Enhanced with onscreen interactive keypad overlays for Android, Windows, and Linux (November 24, 2025)
 
 ## Authors & Contributors
 
-FreeIntv was created by David Richardson.
+freeintv was created by David Richardson.
 The PSG and STIC emulation was made closer to hardware and optimized by Oscar Toledo G. (nanochess), who also added save states.
 
 The Intellivoice code has been contributed by Joe Zbiciak (author of jzintv), and adapted by Oscar Toledo G. (nanochess)
@@ -18,22 +18,22 @@ The Intellivoice code has been contributed by Joe Zbiciak (author of jzintv), an
 
 ## Requirements
 - RetroArch (latest recommended)
-- FreeIntv core (`FreeIntv_libretro.so`, `.dll`, or `.dylib`)
+- freeintv core (`freeintv_libretro.so`, `.dll`, or `.dylib`)
 - Intellivision BIOS files: `exec.bin`, `grom.bin` (place in RetroArch `system` folder)
 - Game ROMs (Intellivision format)
 
 ---
 
 ## Installation
 
-**Step 1: Install FreeIntv Core**
+**Step 1: Install freeintv Core**
 - Place the compiled core file for your platform into RetroArch's `cores/` directory:
-  - Windows: `FreeIntv_libretro.dll`
-  - Linux: `FreeIntv_libretro.so`
-  - macOS: `FreeIntv_libretro.dylib`
+  - Windows: `freeintv_libretro.dll`
+  - Linux: `freeintv_libretro.so`
+  - macOS: `freeintv_libretro.dylib`
 
 **Step 2: Install the Core Info File**
-- Copy `FreeIntv_libretro.info` to RetroArch's `info/` directory
+- Copy `freeintv_libretro.info` to RetroArch's `info/` directory
 - ⚠️ The filename must match the core filename exactly (excluding the file extension)
 
 **Step 3: Add BIOS Files**
@@ -42,13 +42,13 @@ The Intellivoice code has been contributed by Joe Zbiciak (author of jzintv), an
   - `grom.bin` (Graphics ROM)
 
 **Step 4: Launch Games**
-- Load an Intellivision ROM through RetroArch using the FreeIntv core
+- Load an Intellivision ROM through RetroArch using the freeintv core
 
 ---
 
 ## Enabling Onscreen Interactive Overlays
 
-The FreeIntv core features onscreen interactive keypad overlays that display custom controller graphics directly on screen, allowing touch or mouse input.
+The freeintv core features onscreen interactive keypad overlays that display custom controller graphics directly on screen, allowing touch or mouse input.
 
 ### To Enable the Feature:
 

jni/Android.mk

@@ -32,7 +32,7 @@ ANDROID_SOURCES_C := \
 	../src/deps/libretro-common/time/rtime.c
 
 include $(CLEAR_VARS)
-LOCAL_MODULE    := FreeIntv
+LOCAL_MODULE    := retro
 LOCAL_SRC_FILES := $(ANDROID_SOURCES_C)
 LOCAL_C_INCLUDES := $(INCLUDE_DIRS)
 LOCAL_CFLAGS    := -DANDROID -D__LIBRETRO__ -DHAVE_STRINGS_H -DRIGHTSHIFT_IS_SAR