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Added TMS5220C variant to tms5220.c [Credit: Lord Nightmare]
- implemented reset for TMS5220C if /RS and /WS are pulled down together - Inserted LNs email and corrections as comment into source - Created a TODO section.
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@ -38,9 +38,103 @@
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Note the standard naming for d* data bits with 7 as MSB and 0 as LSB is in lowercase.
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TI's naming has D7 as LSB and D0 as MSB and is in uppercase
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TODO:
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Implement a ready callback for pc interfaces
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- this will be quite a challenge since for it to be really accurate
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the whole emulation has to run in sync (lots of timers) with the
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cpu cores.
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If a command is still executing, /READY will be kept high until the command has
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finished if the next command is written.
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TMS5220C: see below.
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Notes:
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Looping has the tms5220 hookep up directly to the cpu. However currently the
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tms9900 cpu core does not support a ready line.
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Email from Lord Nightmare having a lot more detail follows:
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Yes, there is at least two more differences:
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The 5220 is 'noisier' when playing unvoiced frames than the 5220C is; I
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think the 5220C may use a different energy table (or use one value lower
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in the normal energy table) than the 5220 does, possibly only when
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playing unvoiced frames, but I can't prove this without a decap; the
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5220C's PROMOUT pin (for dumping the lpc tables as played) is
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nonfunctional due to changed design or a die bug.
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In addition, the NOP commands on the FIFO interface have been changed
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and data passed in the low bits has a meaning regarding frame length:
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commands :
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(lsb is right, msb is left; x means don't care)
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x0x0xbcc : (5220: NOP) (5220C: select frame length by cc, and b selects
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whether every frame is preceeded by 2 bits to select the frame length
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(instead of using the value set by cc)) (default is 00 for frame length
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(200 samples) and 0 for whether the preceeding 2 bits are enabled (off))
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x001xxxx: sends eight read bit commands (M0 high M1 low) to VSM and
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reads the resulting bits serially into a temporary register, which
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becomes readable as the next byte read from the tms52xx once ready goes
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active.
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Note the bit order of the byte read from the TMS52xx is BACKWARDS as
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compared to the actual data order as in the rom on the VSM chips! This
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was IMHO a rather silly design decision of TI. (I asked Larry
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Brantingham about this but he wasn't involved with the TMS52xx chips,
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just the 5100)
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There's ASCII data in the TI 99/4 speech module VSMs which has the bit
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order reversed on purpose because of this!
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x011xxxx: sends a read and branch command (M0 high, M1 high) to force
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VSM to set its data pointer to whatever the data is at its current
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pointer location is)
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x100aaaa: send a load address command (M0 low M1 high) to vsm with the 4
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'a' bits
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x101xxxx: 'speak' begins speaking from current address in the data
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pointer of the vsms
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x110xxxx: 'speak external' begins speaking from the 16 byte fifo
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x111xxxx: resets the speech synthesis core immediately; clears the bit
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offset counter in the fifo to the nearest byte 'forward ', but does NOT
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clear the fifo, annoyingly!
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Its also possible but inconclusive that the chirp table was changed.
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The LPC tables between the 5220 and 5220C are MOSTLY the same of not
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completely so, but as mentioned above the energy table has some sort of
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difference.
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As for which games used which chips, from the TMS5220 wikipedia page:
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TMS5200 AKA TMC0285: (1981 to 1983ish when supplies ran low)
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Arcade: Zaccaria's 'money money' and 'jack rabbit'; Bally/Midway's
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'Discs of Tron' (all environmental cabs and a few upright cabs; the code
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exists on all versions for the speech though, and upright cabs can be
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upgraded to add it by hacking on a 'Squawk & Talk' pinball speech board
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(which is also TMS5200 based) with a few modded components)
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Pinball: All Bally/Midway machines which uses the 'Squawk & Talk' board.
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Home computer: TI 99/4 PHP1500 Speech module (along with two VSM
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serial chips); Street Electronics Corp.'s Apple II 'Echo 2' Speech
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synthesizer (early cards only)
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TMS5220: (mostly on things made between 1982 and 1984-1985 when supplies
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ran low)
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Arcade: Bally/Midway's 'NFL Football'; Atari's 'Star Wars',
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'Firefox', 'Return of the Jedi', 'Road Runner', 'The Empire Strikes
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Back' (all verified with schematics); Venture Line's 'Looping' and 'Sky
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Bumper' (need verify for both); Olympia's 'Portraits' (need verify);
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Exidy's 'Victory' and 'Victor Banana' (need verify for both)
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Pinball: Several (don't know names offhand, have not checked schematics)
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Home computer: Street Electronics Corp.'s Apple II 'Echo 2' Speech
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synthesizer (later cards only); Texas Instruments' 'Speak and Learn'
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scanner wand unit.
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TMS5220C AKA TSP5220C: (on stuff made from 1984 to 1992 or so)
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Arcade: Atari's 'Indiana Jones and the Temple of Doom', '720',
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'Gauntlet', 'Gauntlet II', 'A.P.B.', 'Paperboy', 'RoadBlasters',
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'Vindicators Pt II'(verify?), and 'Escape from the Planet of the Robot
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Monsters' (all verified except for vindicators pt 2)
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Pinball: Several (less common than the tms5220? (not sure about
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this), mostly on later pinballs with LPC speech)
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Home computer: Street Electronics Corp.'s 'ECHO' parallel/hobbyist
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module (6511 based), IBM PS/2 Speech adapter (parallel port connection
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device), PES Speech adapter (serial port connection)
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***********************************************************************************************/
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@ -58,7 +152,8 @@ Notes:
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enum _tms5220_variant
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{
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variant_tms5220, /* TMS5220_IS_TMS5220, TMS5220_IS_TMS5220C, TMS5220_IS_TSP5220C */
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variant_tms5220c, /* TMS5220_IS_TMS5220C TMS5220_IS_TSP5220C */
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variant_tms5220, /* TMS5220_IS_TMS5220 */
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variant_tmc0285 /* TMS5220_IS_TMS5200, TMS5220_IS_CD2501 */
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};
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typedef enum _tms5220_variant tms5220_variant;
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@ -1138,6 +1233,12 @@ static DEVICE_START( tms5220 )
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register_for_save_states(tms);
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}
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static DEVICE_START( tms5220c )
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{
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tms5220_state *tms = get_safe_token(device);
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DEVICE_START_CALL( tms5220 );
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tms->variant = variant_tms5220c;
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}
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static DEVICE_START( tmc0285 )
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{
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@ -1239,9 +1340,19 @@ WRITE_LINE_DEVICE_HANDLER( tms5220_rsq_w )
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if (new != tms->rs_ws)
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{
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tms->rs_ws = new;
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if (new == 0 || new ==3)
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if (new == 0)
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{
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/* illegal */
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if (tms->variant == variant_tms5220c)
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device_reset(device);
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else
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/* illegal */
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LOG(("tms5220_rs_w: illegal\n"));
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return;
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}
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else if ( new == 3)
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{
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/* high impedance */
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tms->read_latch = 0xff;
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return;
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}
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if (state)
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@ -1272,10 +1383,19 @@ WRITE_LINE_DEVICE_HANDLER( tms5220_wsq_w )
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if (new != tms->rs_ws)
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{
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tms->rs_ws = new;
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if (new == 0 || new ==3)
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if (new == 0)
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{
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/* illegal */
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if (new == 0) LOG(("tms5220_ws_w: illegal\n"));
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if (tms->variant == variant_tms5220c)
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device_reset(device);
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else
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/* illegal */
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LOG(("tms5220_ws_w: illegal\n"));
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return;
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}
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else if ( new == 3)
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{
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/* high impedance */
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tms->read_latch = 0xff;
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return;
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}
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if (state)
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@ -1455,6 +1575,11 @@ static const char DEVTEMPLATE_SOURCE[] = __FILE__;
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#define DEVTEMPLATE_FAMILY "TI Speech"
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#include "devtempl.h"
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#define DEVTEMPLATE_DERIVED_ID(p,s) p##tms5220c##s
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#define DEVTEMPLATE_DERIVED_FEATURES DT_HAS_START
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#define DEVTEMPLATE_DERIVED_NAME "TMS5220C"
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#include "devtempl.h"
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#define DEVTEMPLATE_DERIVED_ID(p,s) p##tmc0285##s
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#define DEVTEMPLATE_DERIVED_FEATURES DT_HAS_START
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#define DEVTEMPLATE_DERIVED_NAME "TMC0285"
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@ -39,10 +39,12 @@ double tms5220_time_to_ready(const device_config *device);
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void tms5220_set_frequency(const device_config *device, int frequency);
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DEVICE_GET_INFO( tms5220c );
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DEVICE_GET_INFO( tms5220 );
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DEVICE_GET_INFO( tmc0285 );
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DEVICE_GET_INFO( tms5200 );
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#define SOUND_TMS5220C DEVICE_GET_INFO_NAME( tms5220c )
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#define SOUND_TMS5220 DEVICE_GET_INFO_NAME( tms5220 )
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#define SOUND_TMC0285 DEVICE_GET_INFO_NAME( tmc0285 )
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#define SOUND_TMS5200 DEVICE_GET_INFO_NAME( tms5200 )
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