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author Jonathan Gevaryahu <Lord-Nightmare@users.noreply.github.com>2010-06-09 12:01:46 +0000
committer Jonathan Gevaryahu <Lord-Nightmare@users.noreply.github.com>2010-06-09 12:01:46 +0000
commitd4e1e8c26622305f4ad0d2c7a58a9f8e3262d370 (patch)
tree2cd16904edaa37467522fe5719159a9ea0eff065
parent7dff680d65b9db3020cee267c57ead808e820db7 (diff)
Update/Correct Space Invaders Comments, particularly regarding Midway Boards [Andrew Welburn, Lord Nightmare]
-rw-r--r--src/mame/drivers/8080bw.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/src/mame/drivers/8080bw.c b/src/mame/drivers/8080bw.c
index 93946aa7d53..f1004cd9d98 100644
--- a/src/mame/drivers/8080bw.c
+++ b/src/mame/drivers/8080bw.c
@@ -70,9 +70,10 @@
a paper sticker on the pcb; The code will be of the format mVNnnnnn where
m is a letter and nnnnn is a number.
Codes:
- * unknown (L shaped pcb) - B&W only, used on "Space Invaders" Upright
+ * SVNxxxxx? (L shaped pcbset) - B&W only, used on "Space Invaders" Upright
with 3-strip overlay.
- Came from factory with one of the TV romsets ONLY.
+ Audio PCB daughterboard has part number SVN00001 or SVN00003.
+ Came from factory with one of the TV romsets ONLY?
Capable of running TV, SV or CV romsets.
* TVNxxxxx (3 layer pcb) - B&W only, used on "T.T Space Invaders"
cocktail with blended single-sheet color gel overlay.
@@ -104,12 +105,11 @@
PV01, PV02, PV03, PV04, PV05 w/proms - invadpt2
- Midway PCB sets: (cursory descripton)
- * Midway Space Invaders Deluxe (and Deluxe Cocktail) use a special midway-made PCB set
- which is significantly different from the taito ones.
- * Midway Space Invaders II (only produced as a cocktail) is also significantly different hardware from the Taito SI hardware, but additionally has different (head to head) gameplya, as well has having two sound boards instead of one.
- TODO: this needs to be emulated properly
- * Both midway space invaders games' sound is different from the taito ones (particularly the shot sound) due to using slightly different components on the discrete section.
- TODO: this needs to be emulated properly
+ NOTE: The discrete components, particularly for the shot sound, differ between Taito and Midway audio daughterboards.
+ TODO: figure out the difference between the Taito and Midway discrete boards and emulate them both properly. Figure out what the current discrete setup is trying to emulate.
+ * All Midway Space Invaders games ([Space Invader Upright], [Space Invader Cocktail], [Deluxe Space Invaders Upright], [Deluxe Space Invaders Cocktail], and [Space Invaders II]) use the same 8080 mainboard, with no emulation-relevant differences between revisions.
+ * [Space Invaders II] from Midway (only produced as a cocktail) uses an extra sound board for the simultaneous 2 player head-to-head sounds.
+ TODO: remove Space Invader 'invaders' set from mw8080bw.c, it does not belong there at all
- Taito-USA-made 'trimline' PCBS do not match the taito pcbs either.
*/