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canon_s80.cpp: added hardware info and trojaned internal HD6301 ROM for canonts3 [Guru]
This commit is contained in:
Ivan Vangelista
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022e70fea6
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1f460d4e5b
@ -10,9 +10,142 @@
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*
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* known issues:
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* - memory-map is uncertain
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* - maincpu clock is guessed
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* - maincpu clock was only verified for canonts3, but it's probably the same for canons80
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* - still lacks description of the keyboard inputs
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* - as well as a "paper" device to plot the output of the dot matrix print head
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*************************************************************************************
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Canon Typestar 3 Electronic Typewriter, Canon 1989/1990.
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Hardware info by Guru
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Last updated: 21st May 2021
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---------------------------
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This is an electronic typewriter made by Canon.
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It uses a thermal printing process with ribbon cartridges containing a coil
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of plastic tape coated with black 'ink' that is fused onto the paper via
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heat from the thermal print-head.
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The LCD has an alpha-numeric 15 character display with full editing capability and
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some other areas that show fixed functions and operation modes.
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It appears to be functionally identical to the Canon S80 Electronic Typewriter.
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PCB Layout
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----------
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CANON NH1-0275-04
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|------------------------------------------|
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|CN1 CN2 CN6 |
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| PIEZO VR2 FUSE(3A) DC|
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| T1719A |
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| CN3 CN4 M5233 M54523P SW1|
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| CN5 |
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| LC3518 |
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| MB64H192 HD63A01X0P NH4-0268.IC6 VR1|
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| 6MHz |
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|------------------------------------------|
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Notes:
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CN1 - Head left-travel end-of-stroke switch connector (2 wires)
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On power-up the head moves left to touch this switch then moves right about 1 inch then stops.
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CN2 - Multi-pin flat cable for carriage power and data
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CN3 - Multi-pin flat cable for LCD
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CN4/CN5 - Multi-pin flat cables for keyboard
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CN6 - Connector for battery power input (6V via 4x 1.5V D-Cells). There are 3 wires so
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the CPU can detect when the battery is low and give the user a warning about it.
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VR1 - Print darkness adjustment pot
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VR2 - Piezo volume adjustment pot
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PIEZO - Piezo speaker/beeper
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LC3518 - Sanyo LC3518BL-15 2kb x8-bit SRAM, equivalent to 6116
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NH4-0268.IC6 - Toshiba TC53257P 32kb x8-bit mask ROM marked 'NH4-0268' at location IC6
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The ROM supports all characters in English, German, French, Spanish and Italian languages.
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HD63A01X0P - Hitachi HD63A01X0P micro-controller with 4kb x8-bit internal mask ROM. Clock input 6MHz.
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HD63A01 has an on-chip divide-by-4 clock divider so the MCU runs at 1.5MHz internally.
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MCU is marked with a Canon part number 'NH4-0021' at location IC5.
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The internal ROM was trojan-dumped using the undocumented test mode.
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T1719A - Toshiba T1719A. Datasheet not available. This is most likely the keyboard and LCD
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controller and probably made exclusively for Canon.
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MB64H192 - Fujitsu MB64H192. Datasheet not available. This is most likely the carriage
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motor controller and probably made exclusively for Canon.
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M5233 - Mitsubishi M5233 Dual Comparitor, equivalent to LM4558
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M54523P - Mitsubishi M54523P 7-Unit 500mA Darlington Transistor Array with clamp diode
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DC - 6V DC power input 5.5mm barrel jack
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SW1 - Power on/off switch
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Keyboard Layout
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---------------
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Keyboard is made by Matsushita
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Part#: NS5-0594
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|--------------------------------------------------------------------------------|
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|MARGIN KB |---------------------| L/MARGIN R/MARGIN|
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|RELEASE | LCD | VR |
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| MODE | | TABSET TABCLR |
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| |---------------------| |
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| ! @ # $ % Yen & * ( ) _ + <- -> |
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|+- 1 2 3 4 5 6 7 8 9 0 - = |
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| 1/4 |
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| TAB Q W E R T Y U I O P 1/2 BS |
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| |
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| : "[ |
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| LOCK A S D F G H J K L ; '] |
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| RETURN|
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| ?3 |
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| SHIFT Z X C V B N M , . /2 SHIFT |
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| |
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| REPEAT SPACE RELOC CODE|
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|--------------------------------------------------------------------------------|
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Notes:
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In the diagram above not all characters are shown due to being special or
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international characters that are not available on US keyboards, however every
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character used in the languages included in the ROM are available from this keyboard.
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There are several keys with up to 4 different characters on them. They are
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accessed by holding the key modifier SHIFT and KB keys.
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KB is used to select the characters on the left side of a key or the right side
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of a key. On the LCD fixed lower display, it will show I or II denoting either
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the left (I) or right (II) side of the key is active. When typing a key the lower
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character is normally active and the upper character is accessed by holding SHIFT.
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VR2 - LCD brightness adjustment pot
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MODE KEY FUNCTIONS (* = power-on default)
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---------|---------------------------------------------------
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* MODE + | +- Sets line spacing mode to 1
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MODE + | 1 Sets line spacing mode to 1 1/2
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MODE + | 2 Sets line spacing mode to 2
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MODE + | 3 Sets typing mode to C (character by character printing like a mechanical typewriter, characters do not appear on the LCD)
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* MODE + | 4 Sets typing mode to L (line printing, characters show on LCD and can be edited, then printed as one line by pressing RETURN)
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* MODE + | 5 Sets printing mode to normal print
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MODE + | 6 Sets printing mode to double-width print
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MODE + | 7 Sets printing mode to underlined print
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MODE + | 9 Sets manual carriage return mode
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* MODE + | 0 Sets automatic carriage return mode
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MODE + | = Sets justified text mode
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MODE + | Q Moves the carriage while using the display for manual carriage positioning (for example typing in columns etc)
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* MODE + | <- Sets typestyle mode to A (COURIER 10)
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MODE + | -> Sets typestyle mode to B (CUBIC PS)
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MODE + | Z Sets/cancels shading print mode. A 2nd menu will appear showing 4 shading modes that are selected by pressing numbers 1 - 4
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---------|---------------------------------------------------
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CODE KEY FUNCTIONS
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---------|---------------------------------------------------
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CODE + | 1 Sets centering between margins
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CODE + | 2 Sets centering between tabs
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CODE + | 4 Executes right margin alignment
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CODE + | 5 Sets/clears indent position
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CODE + | 6 Executes decimal tab
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CODE + | 0 Executes automatic paper feed (i.e. loads paper to a fixed start position automatically)
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CODE + | TABSET Sets decimal tab
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CODE + | TAB Confirms decimal tab position
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CODE + |TAB+TABCLR Clears specific decimal tab
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CODE + | TABCLR Clears all tabs and decimal tabs
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CODE + | = Executes permanent hyphen
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CODE + | B Executes permanent space
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CODE + | SPACE Executes controlled carriage movement
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CODE + | RETURN Returns carriage without line feed
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CODE + | D Prints a demo on the paper
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---------|---------------------------------------------------
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*************************************************************************************
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*/
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#include "emu.h"
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@ -60,7 +193,7 @@ void canons80_state::canons80_map(address_map &map)
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void canons80_state::canons80(machine_config &config)
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{
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// basic machine hardware
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hd6301x0_cpu_device &maincpu(HD6301X0(config, "maincpu", 5000000)); // hd63a01xop 5 MHz guessed: TODO: check on PCB
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hd6301x0_cpu_device &maincpu(HD6301X0(config, "maincpu", 6_MHz_XTAL)); // hd63a01xop
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maincpu.set_addrmap(AS_PROGRAM, &canons80_state::canons80_map);
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screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD));
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@ -96,15 +229,8 @@ ROM_END
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ROM_START( canonts3 )
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ROM_REGION( 0x1000, "maincpu", 0 )
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ROM_LOAD( "hd63a1x0p.bin", 0x0000, 0x1000, NO_DUMP )
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ROM_FILL( 0xfec, 1, 0xbf )
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ROM_FILL( 0xfed, 1, 0xf2 )
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ROM_FILL( 0xff4, 1, 0xbf )
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ROM_FILL( 0xff5, 1, 0xf5 )
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ROM_FILL( 0xffa, 1, 0xbf )
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ROM_FILL( 0xffb, 1, 0xf8 )
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ROM_FILL( 0xffe, 1, 0xbf )
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ROM_FILL( 0xfff, 1, 0xfb )
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// every 0x100 range was read via trojan 7 times, but reads weren't totally consistent. This was reconstructed by taking the most consistent reads for each byte.
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ROM_LOAD( "nh4-0021.ic5", 0x0000, 0x1000, BAD_DUMP CRC(b859b7d4) SHA1(3a5a80b1b8040fe0b13c0fb52b93f738a06eff16) )
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ROM_REGION( 0x8000, "external", 0 )
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ROM_LOAD( "nh4-0268.ic6", 0x0000, 0x8000, CRC(bbdd9f74) SHA1(347fa0d37f4df0c175ff1d7feb634f681739804f) )
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