From e3fa1b874ec1b16d65a9ccdf79c6ffb2598f9a30 Mon Sep 17 00:00:00 2001 From: Lord-Nightmare Date: Sun, 4 Jun 2017 04:01:22 -0400 Subject: various comment updates (nw) --- src/devices/cpu/upd7725/upd7725.h | 4 ++-- src/devices/sound/ay8910.cpp | 4 ++-- src/mame/drivers/bpmmicro.cpp | 4 ++-- 3 files changed, 6 insertions(+), 6 deletions(-) (limited to 'src') diff --git a/src/devices/cpu/upd7725/upd7725.h b/src/devices/cpu/upd7725/upd7725.h index 06eceebe53d..ac4270729df 100644 --- a/src/devices/cpu/upd7725/upd7725.h +++ b/src/devices/cpu/upd7725/upd7725.h @@ -187,8 +187,8 @@ private: int m_icount; bool m_irq; // old irq line state, for detecting rising edges. // m_irq_firing: if an irq has fired; 0 = not fired or has already finished firing - // 1 = next opcode is the first half of int firing 'NOP+push pc' - // 2 = next opcode is the second half of int firing 'JMP 0100' + // 1 = next opcode is the first half of int firing 'NOP' + // 2 = next opcode is the second half of int firing 'CALL 0100' int m_irq_firing; address_space *m_program, *m_data; direct_read_data *m_direct; diff --git a/src/devices/sound/ay8910.cpp b/src/devices/sound/ay8910.cpp index 78847be413a..4177dc8aec7 100644 --- a/src/devices/sound/ay8910.cpp +++ b/src/devices/sound/ay8910.cpp @@ -398,8 +398,8 @@ AY-3-8914/A: 2 I/O ports AY-3-8914A die is unknown. AY-3-8916: 2 I/O ports A7 thru A4 enable state for selecting a register can be changed with a - factory mask adjustment but was 1111 for the part shipped with the - Intellivision ECS module. + factory mask adjustment; its mask is unknown. This chip was shipped + with certain later Intellivision II systems. Pins 24, 25, and 26 are /A9, /A8(!), and TEST2, which are an active low, low(!) and high chip enable, respectively. NOTE: the /A8 enable polarity may be mixed up with AY-3-8917 below. diff --git a/src/mame/drivers/bpmmicro.cpp b/src/mame/drivers/bpmmicro.cpp index cbf5ed5beaf..89170f689ae 100644 --- a/src/mame/drivers/bpmmicro.cpp +++ b/src/mame/drivers/bpmmicro.cpp @@ -21,9 +21,9 @@ * 286 based w/240 pin tech adapter integrated as a "mezzanine board", expandable ram: * BP-1400/240 - uses a 30 OR 72 pin SIMM (some programmers may have the 30 pin SIMM socket populated) for up to 8MB? of ram -* BP-1400/84 - more or less a 1200/84 with expandable ram, very rare. * Silicon Sculptor - custom firmware locked to Actel fpga/pld [1400?] - devices, may have a custom MB + devices, may have a custom MB; drives 84 pins (no third connector) + so probably "BP1400/84" based, i.e. a neutered BP-1400/240. * Silicon Sculptor 6X - as above but 6 programmers ganged together * 486 based: * BP-1600 - 486DX4 100Mhz based, uses a 72 pin SIMM for up to 16MB of -- cgit v1.2.3-70-g09d2