From aa20b2e580d11b17ce9ab411eb6eed69a67ed8c0 Mon Sep 17 00:00:00 2001 From: AJR Date: Mon, 12 Mar 2018 14:10:31 -0400 Subject: [PATCH] radionic: Yet another clock note (nw) --- src/mame/drivers/trs80.cpp | 1 + 1 file changed, 1 insertion(+) diff --git a/src/mame/drivers/trs80.cpp b/src/mame/drivers/trs80.cpp index 8033c405eb4..63a6f68f161 100644 --- a/src/mame/drivers/trs80.cpp +++ b/src/mame/drivers/trs80.cpp @@ -722,6 +722,7 @@ MACHINE_CONFIG_START(trs80_state::radionic) model1(config); MCFG_CPU_MODIFY("maincpu") MCFG_CPU_CLOCK(12_MHz_XTAL / 6) // or 3.579MHz / 2 (selectable?) + // Komtek I "User Friendly Manual" calls for "Z80 running at 1.97 MHz." Schematics mark XTAL as 12 MHz, but is that rounded off? MCFG_CPU_PERIODIC_INT_DRIVER(trs80_state, nmi_line_pulse, 12_MHz_XTAL / 12 / 16384) MCFG_SCREEN_MODIFY("screen")