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DISPLAY: Type 30/340 phosphor was likely P7 not P17; update name, comments

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This commit is contained in:
Phil Budne 2018-02-20 02:00:48 -05:00
parent 40dd3a3c7c
commit 60209b993e
1 changed files with 15 additions and 8 deletions
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23
display/display.c
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@ -105,13 +105,20 @@ struct display {
/* /*
* original phosphor constants from Raphael Nabet's XMame 0.72.1 PDP-1 sim. * original phosphor constants from Raphael Nabet's XMame 0.72.1 PDP-1 sim.
* not even sure Type30 really used P17 (guess by Daniel P. B. Smith) *
* http://bitsavers.trailing-edge.com/components/rca/hb-3/1963_HB-3_CRT_Storage_Tube_and_Monoscope_Section.pdf
* pdf p374 says 16ADP7 used P7 phosphor.
* pdf pp28-32 describe P7 phosphor (spectra, buildup, persistence)
*
* https://www.youtube.com/watch?v=hZumwXS4fJo
* "3RP7A CRT - P7 Phosphor Persistence" shows colors/persistence
*/ */
static struct phosphor p17[] = { */
static struct phosphor p7[] = {
{0.11, 0.11, 1.0, 0.5, 0.05}, /* fast blue */ {0.11, 0.11, 1.0, 0.5, 0.05}, /* fast blue */
{1.0, 1.0, 0.11, 0.5, 0.20} /* slow yellow/green */ {1.0, 1.0, 0.11, 0.5, 0.20} /* slow yellow/green */
}; };
static struct color color_p17 = { p17, ELEMENTS(p17), 125000 }; static struct color color_p7 = { p7, ELEMENTS(p7), 125000 };
/* green phosphor for VR14, VR17, VR20 */ /* green phosphor for VR14, VR17, VR20 */
static struct phosphor p29[] = {{0.0260, 1.0, 0.00121, 0.5, 0.025}}; static struct phosphor p29[] = {{0.0260, 1.0, 0.00121, 0.5, 0.025}};
@ -137,10 +144,10 @@ static struct display displays[] = {
* 12" tube, * 12" tube,
* maximum dot size ??? * maximum dot size ???
* 50us point plot time (20,000 points/sec) * 50us point plot time (20,000 points/sec)
* P17 Phosphor??? Two phosphor layers: * P7 Phosphor??? Two phosphor layers:
* fast blue (.05s half life), and slow green (.2s half life) * fast blue (.05s half life), and slow green (.2s half life)
*/ */
{ DIS_TX0, "MIT TX-0", &color_p17, NULL, 512, 512 }, { DIS_TX0, "MIT TX-0", &color_p7, NULL, 512, 512 },
/* /*
@ -152,12 +159,12 @@ static struct display displays[] = {
* 16" tube, 14 3/8" square raster * 16" tube, 14 3/8" square raster
* maximum dot size .015" * maximum dot size .015"
* 50us point plot time (20,000 points/sec) * 50us point plot time (20,000 points/sec)
* P17 Phosphor??? Two phosphor layers: * P7 Phosphor??? Two phosphor layers:
* fast blue (.05s half life), and slow green (.2s half life) * fast blue (.05s half life), and slow green (.2s half life)
* 360 lb * 360 lb
* 7A at 115+-10V 60Hz * 7A at 115+-10V 60Hz
*/ */
{ DIS_TYPE30, "Type 30", &color_p17, NULL, 1024, 1024 }, { DIS_TYPE30, "Type 30", &color_p7, NULL, 1024, 1024 },
/* /*
* VR14 * VR14
@ -221,7 +228,7 @@ static struct display displays[] = {
* 0,0 at lower left * 0,0 at lower left
* 8 intensity levels * 8 intensity levels
*/ */
{ DIS_TYPE340, "Type 340", &color_p17, NULL, 1024, 1024 } { DIS_TYPE340, "Type 340", &color_p7, NULL, 1024, 1024 }
}; };
/* /*