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authorGravatarGravatar AJR <ajrhacker@users.noreply.github.com>2021-01-23 12:46:15 -0500
committerGravatarGravatar AJR <ajrhacker@users.noreply.github.com>2021-01-23 12:46:15 -0500
commit793bbc9bb6c4f2b2ce60bbf833ebe6a9f927f97e (patch)
treede157df58b6fe0f48038f0be35d478b840b2e533
parent16f4f13ff8e28920a40bdb0dccd4c0d8213cd535 (diff)
mccpm.cpp: Clocking note
-rw-r--r--src/mame/drivers/mccpm.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/drivers/mccpm.cpp b/src/mame/drivers/mccpm.cpp
index 4929661b792..161423a090d 100644
--- a/src/mame/drivers/mccpm.cpp
+++ b/src/mame/drivers/mccpm.cpp
@@ -212,12 +212,12 @@ void mccpm_state::mccpm(machine_config &config)
/* Devices */
// clock supplied by pair of HD4702 baud rate generators
- F4702(config, m_brg[0], 2.4576_MHz_XTAL);
+ F4702(config, m_brg[0], 2.4576_MHz_XTAL); // XTAL connected to Ix/Ox
m_brg[0]->s_callback().set_ioport("BAUD1");
m_brg[0]->z_callback().set("sio", FUNC(z80sio_device::rxtxcb_w));
m_brg[0]->z_callback().append(FUNC(mccpm_state::bd_q_w<0>));
- F4702(config, m_brg[1], 2.4576_MHz_XTAL);
+ F4702(config, m_brg[1], 2.4576_MHz_XTAL); // Cp connected to first BRG's CO
m_brg[1]->s_callback().set_ioport("BAUD2");
m_brg[1]->z_callback().set("sio", FUNC(z80sio_device::txca_w));
m_brg[1]->z_callback().append("sio", FUNC(z80sio_device::rxca_w));