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(MESS) microvsn.c: Small documentation update and improvements to clock speeds (nw)

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Wilbert Pol 2013-01-01 13:11:39 +00:00
parent 7e98daca92
commit c555a5ba9f
1 changed files with 8 additions and 3 deletions
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11
src/mess/drivers/microvsn.c
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@ -6,6 +6,11 @@
* Add support for the paddle control
* Finish support for i8021 based cartridges
Since the microcontrollers were on the cartridges it was possible to have
different clocks on different games.
The Connect Four I8021 game is clocked at around 2MHz. The TMS1100 versions
of the games were clocked at around 500KHz, 550KHz, or 300KHz.
****************************************************************************/
#include "emu.h"
@ -447,10 +452,10 @@ static const tms0980_config microvision_tms0980_config =
static MACHINE_CONFIG_START( microvision, microvision_state )
MCFG_CPU_ADD("maincpu1", I8021, 400000) // totally wild guess, needs to be verified
MCFG_CPU_ADD("maincpu1", I8021, 2000000) // approximately
MCFG_CPU_IO_MAP( microvision_8021_io )
MCFG_CPU_ADD("maincpu2", TMS1100, 400000)
MCFG_CPU_CONFIG( microvision_tms0980_config ) // totally wild guess, needs to be verified
MCFG_CPU_ADD("maincpu2", TMS1100, 500000) // most games seem to be running at approximately this speed
MCFG_CPU_CONFIG( microvision_tms0980_config )
MCFG_SCREEN_ADD("screen", LCD)
MCFG_SCREEN_REFRESH_RATE(60)