From 62e763ecdd755ceb2e9b0b05d97ca1d43c18ac09 Mon Sep 17 00:00:00 2001
From: kub <derkub@gmail.com>
Date: Tue, 26 Mar 2024 22:36:21 +0100
Subject: [PATCH] platform, small fixes for Pico, updated readme
---
platform/base_readme.txt | 32 ++++++++++++++++++++++++++++++--
platform/libpicofe | 2 +-
platform/libretro/libretro.c | 2 +-
3 files changed, 32 insertions(+), 4 deletions(-)
diff --git a/platform/base_readme.txt b/platform/base_readme.txt
index d4575215..51dcb98a 100644
--- a/platform/base_readme.txt
+++ b/platform/base_readme.txt
@@ -72,6 +72,33 @@ When using CUE/BIN, you must load .cue file from the menu, or else the emu will
not find audio tracks.
+How to run Sega Pico games
+--------------------------
+
+The Pico was special in that it had a large touchpad with an associated pen, and
+so-called storyware, a combination of a cartridge with a book with up to 6 pages
+on which the pen could also be used.
+
+Most storywares used the touchpad with the pen as a pointer device, showing a
+pointer icon on the screen when the pen was on the touchpad which could be moved
+around. The pen has a dedicated button which was often used to select something
+under the pointer icon, much like a mouse button.
+However, a few games also had an overlay for the touchpad.
+
+PicoDrive supports displaying both the storyware pages as well as a pad overlay.
+They must be in png format and named like the storyware ROM without the
+extension, plus "_<n>.png" for the storyware page <n>, and "_pad.png" for a pad
+overlay. Storyware page images should have an aspect ration of 2:1, pad images
+should have 4:3. All images can have arbitrary resolution and are automatically
+scaled to fit the screen.
+
+There are 2 menu actions for switching to pages or pad which will automatically
+display the images if they are available. To allow for proper pen positioning
+there is also an action for having the pen on the page/touchpad or not. Pen
+positioning is done through the D-pad if the screen has been switched to either
+pages or pad.
+
+
Other important stuff
---------------------
@@ -528,8 +555,9 @@ main 68k @ 7.6MHz: yes, Cyclone (on 32 bit ARM CPUs) or FAME/C core
VDP: yes, except some quirks and mode 4, not used by games
SN76489 PSG: yes, MAME core
ADPCM: yes, MAME core
-Pico Pen: yes, to some extend
-Pico Storyware pages: no
+Pico Pen: yes
+Pico Storyware pages: yes
+Pico pad overlays: yes
Problems / limitations
diff --git a/platform/libpicofe b/platform/libpicofe
index 4563c131..697806c4 160000
--- a/platform/libpicofe
+++ b/platform/libpicofe
@@ -1 +1 @@
-Subproject commit 4563c13167deb97851397789bf2fb95bb44cf1ed
+Subproject commit 697806c41dccf0adb0a3a35171f6eff9a9191240
diff --git a/platform/libretro/libretro.c b/platform/libretro/libretro.c
index 6423a61a..62c09103 100644
--- a/platform/libretro/libretro.c
+++ b/platform/libretro/libretro.c
@@ -1466,7 +1466,7 @@ bool retro_load_game(const struct retro_game_info *info)
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Red Button" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Pen Button" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Pen State" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Pen on Storyware" },
+ { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "Pen on Storyware" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Pen on Pad" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "Previous Page" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Next Page" },
--
2.39.5