diff options
author | hap <happppp@users.noreply.github.com> | 2021-11-30 14:30:27 +0100 |
---|---|---|
committer | hap <happppp@users.noreply.github.com> | 2021-11-30 14:30:43 +0100 |
commit | cdce54aabf94851fb1882effee7b408093f05e42 (patch) | |
tree | 788604b29db0eb06c1236b7f3487387d63a9fd52 /src | |
parent | c2a18887b0d68ff88d631801d2e5d5448508e2cb (diff) |
saitek_osa/sparc: add note about expanded ram
Diffstat (limited to 'src')
-rw-r--r-- | src/devices/bus/saitek_osa/sparc.cpp | 5 | ||||
-rw-r--r-- | src/mame/drivers/im01.cpp | 6 |
2 files changed, 8 insertions, 3 deletions
diff --git a/src/devices/bus/saitek_osa/sparc.cpp b/src/devices/bus/saitek_osa/sparc.cpp index 636c3387ca8..b8bcc6f4e32 100644 --- a/src/devices/bus/saitek_osa/sparc.cpp +++ b/src/devices/bus/saitek_osa/sparc.cpp @@ -15,6 +15,11 @@ Hardware notes: The module doesn't have its own LCD screen. It has a grill+fan underneath at the front part, and a heatsink on the CPU. +About expanded RAM: The 4MB expansion mentioned in the manual works well, +but it doesn't look like the software was designed to work with other options. +At 2MB it doesn't work at all. At 8MB or 16MB it becomes very inefficient, +only using 5MB or 9MB of the available RAM for hash tables. + TODO: - runs too slow? solving mate problems is around 60% slower than real device, maybe cpu cache related? diff --git a/src/mame/drivers/im01.cpp b/src/mame/drivers/im01.cpp index 7484f0aee23..32ab3176e29 100644 --- a/src/mame/drivers/im01.cpp +++ b/src/mame/drivers/im01.cpp @@ -156,7 +156,7 @@ u16 im01_state::mux_r(offs_t offset, u16 mem_mask) void im01_state::mux_w(offs_t offset, u16 data, u16 mem_mask) { - // d0-d5: input mux + // d0-d5: input mux, digit select COMBINE_DATA(&m_inp_mux); update_display(); @@ -171,7 +171,7 @@ u16 im01_state::digit_r(offs_t offset, u16 mem_mask) void im01_state::digit_w(offs_t offset, u16 data, u16 mem_mask) { - // d0-d7: digit segment data + // d1-d7: digit segment data COMBINE_DATA(&m_digit_data); update_display(); } @@ -263,7 +263,7 @@ void im01_state::im01(machine_config &config) m_maincpu->set_periodic_int(FUNC(im01_state::interrupt), attotime::from_hz(177)); // video hardware - PWM_DISPLAY(config, m_display).set_size(5, 8); + PWM_DISPLAY(config, m_display).set_size(5, 7); m_display->set_segmask(0x1f, 0x7f); config.set_default_layout(layout_im01); |