blowfish64

Updating U4

Unscrew the case via the 4 screws on the back.
Desolder the positive lead of the rechargeable battery. This is necessary because the bootloader of U4 is only present immediately after power-on.
Configure Tigard (or other USB-TTL device) as follows:
1. VTGT switch to 3V3
2. TX to P1 (left side of U4, clearly marked
3. RX to P2 (just above P1)
4. GND to GND (just below P1, unmarked)
5. Prep VTGT to connect to VTGT (just above P2, unmarked, trace goes to pin 2 of U4)

Symbol	SCMD	IRX export	RPC command
sceCdReadClock	0x08	0x18	0x01
sceCdWriteClock	0x09	0x19	0x02
sceCdGetDiskType	0NA	0x0c	0x03
sceCdGetError	0NA	0x08	0x04
sceCdTrayReq	0NA	0x0e	0x05
sceCdRI	0x12	0x16	0x06
sceCdWI	0x13	0x17	0x07
sceCdReadNVM	0x0a	0x1a	0x08
sceCdWriteNVM	0x0b	0x1b	0x09

Here's a contest for OSDSYS/BIOS/ROM/Menu permissively licensed assets.
The voting page will go up once enough submissions are made.
The goal of this contest is to select the best assets for a brand new OSDSYS program, which will be launched from a Memory Card (using the exploited Memory Card Update feature of the original OSDSYS) or from a brand new ROM reimplementation.
All assets submitted must be licensed under a permissive license such as Apache, BSD, MIT, CC0, etc.
Please submit your own original works, not those copied or modified from the original ROM.
Feel free to submit assets in the format that you prefer.
Also, feel free to submit short descriptions for each asset that does not have a description. For icon/3D assets, try uploading in the PS2 icon format, but if you can't, upload the original project file along with the name of the software that you are using so I can take a crack at it.
For image assets, try uploading in the PNG format.
For audio assets, any format that is readable

OSDSYS image resource image information

The information in this documentation does not apply to the early Protokernel consoles which has a very different OSDSYS program.

The images stored in the ROM are in a compressed format, so decompress before use. The following is the implementation of the decompression routine: https://gist.github.com/uyjulian/14388e84b008a6433aa805f5d0436c87

The images stored in the ROM are raw image formats with no information attached, so the following table describes the extra information required to display the image.

CDVDFSV RPC index	CDVDMAN export index	SCMD index	SCMD index (hex)	PCSX2 reference	SCMDGeneral reference
40	110	33	0x21	sceCdWriteWakeUpTime	sceCdWriteWakeUpTime
41	109	34	0x22	sceCdReadWakeUpTime	sceCdReadWakeUpTime
42	148	39	0x27	N/A	sceCdReadPS1BootParam
43	150	40	0x28	N/A	sceCdSetFanProfile
44	152	03	0x03	N/A	FurtherSubcommands
49	117	31	0x1f	sceRemote2_7	sceRemote2_7
50	116	29	0x1d	N/A	N/A
53	120	37	0x25	N/A	sceCdSetLEDsMode
56	128	38	0x26	N/A	N/A

	#!/bin/sh
	# Silly speed test just by downloading a file directly to /dev/null
	# Useful on routers which only have busybox installed.
	# ↄ⃝🄯 B9 2016, 2018, 2023. Creative Commons Zero.

	# NOTA BENE: cachefly has worked for over a decade, however they may
	# be getting tired of scripts like this. Starting February 2023, their
	# 100mb.test file is empty and the 50mb.test file holds 100MB.

	dotest() {

	#include <stdint.h>
	#include <stdbool.h>
	#include <stdio.h>
	#include <stdlib.h>

	// This offset is only for UDNL modules in kHn unpacked PSBBN 0.32...
	// Adjust if needed
	#define DATA_OFFSET 0x1720

	int psbbn_ioprp_decompress(uint8_t a1, uint8_t a2)


	#include <stdint.h>
	#include <stdbool.h>
	#include <stdio.h>
	#include <stdlib.h>


	uint32_t decompress_osdsys(uint8_t src, uint8_t dst)
	{
	uint32_t run = 0;

	#ifndef PORTABLE_MMAP_H
	#define PORTABLE_MMAP_H

	#ifdef _WIN32
	/* mmap() replacement for Windows
	*
	* Author: Mike Frysinger <[email protected]>
	* Placed into the public domain
	*/

	// Just before switching jobs:
	// Add one of these.
	// Preferably into the same commit where you do a large merge.
	//
	// This started as a tweet with a joke of "C++ pro-tip: #define private public",
	// and then it quickly escalated into more and more evil suggestions.
	// I've tried to capture interesting suggestions here.
	//
	// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
	// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,