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author Onmp314 <71551115+Onmp314@users.noreply.github.com>2021-02-20 06:50:22 +0100
committer GitHub <noreply@github.com>2021-02-20 06:50:22 +0100
commit8dd6c849d5493ca9e662dae16a466854a5a1c71f (patch)
tree595f30f38c91c33c080df1eb1f68f979232dd85b
parent5ecba50ff3952cb8e5c23cd2fa5002b025174cd1 (diff)
actions_atj2279b.cpp: add notes (#7392)
-rw-r--r--src/mame/drivers/actions_atj2279b.cpp11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/mame/drivers/actions_atj2279b.cpp b/src/mame/drivers/actions_atj2279b.cpp
index fa28e4d122a..0139906184f 100644
--- a/src/mame/drivers/actions_atj2279b.cpp
+++ b/src/mame/drivers/actions_atj2279b.cpp
@@ -7,6 +7,11 @@
connects to other PCBs with various types of slots (USB, SD etc.)
(ADD FULL DETAILS)
+ Specifications (incomplete and unconfirmed):
+ CPU: 450 MHz ATJ227X with intergrated GPU
+ SDRAM: 256MB
+ (source: http://wecmuseum.org/index.php?title=Retro-Bit_Generations)
+
TODO: everything - emulate the SoC
Presumably has an internal bootstrap (at least) to boot from the NAND
@@ -72,14 +77,14 @@ uint32_t actions_atj2279b_state::screen_update(screen_device &screen, bitmap_rgb
void actions_atj2279b_state::actions_atj2279b(machine_config &config)
{
- ARM7_BE(config, m_maincpu, 100'000'000); // unknown ARM type in SoC (are there any documents?) probably much newer than this
+ ARM7_BE(config, m_maincpu, 450'000'000); // Probably ATJ227X 450MHz, but this needs to be checked more closely
m_maincpu->set_addrmap(AS_PROGRAM, &actions_atj2279b_state::atj2279b_map);
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(60);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
- screen.set_size(640, 480);
- screen.set_visarea(0, 640-1, 0, 480-1);
+ screen.set_size(1280, 720);
+ screen.set_visarea(0, 1280-1, 0, 720-1); // resolution unconfirmed (possibly 1080p as well, but this is unlikely)
screen.set_screen_update(FUNC(actions_atj2279b_state::screen_update));
SPEAKER(config, "lspeaker").front_left();