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https://github.com/holub/mame
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apple2: Initial support for ComputerEyes/2 slot card [R. Belmont, Golden Child]
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arbee
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commit
a40bc736e7
@ -2143,6 +2143,8 @@ if (BUSES["A2BUS"]~=null) then
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MAME_DIR .. "src/devices/bus/a2bus/transwarp.h",
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MAME_DIR .. "src/devices/bus/a2bus/4play.cpp",
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MAME_DIR .. "src/devices/bus/a2bus/4play.h",
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MAME_DIR .. "src/devices/bus/a2bus/computereyes2.cpp",
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MAME_DIR .. "src/devices/bus/a2bus/computereyes2.h",
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}
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end
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224
src/devices/bus/a2bus/computereyes2.cpp
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224
src/devices/bus/a2bus/computereyes2.cpp
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@ -0,0 +1,224 @@
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// license:BSD-3-Clause
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// copyright-holders:R. Belmont
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/*********************************************************************
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computereyes2.c
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Implemention of the Digital Vision ComputerEyes/2 card.
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*********************************************************************/
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#include "emu.h"
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#include "computereyes2.h"
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/***************************************************************************
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PARAMETERS
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***************************************************************************/
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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DEFINE_DEVICE_TYPE(A2BUS_COMPUTEREYES2, a2bus_computereyes2_device, "a2ceyes2", "Digital Vision ComputerEyes/2")
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/***************************************************************************
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FUNCTION PROTOTYPES
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***************************************************************************/
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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void a2bus_computereyes2_device::device_add_mconfig(machine_config &config)
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{
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IMAGE_PICTURE(config, m_picture);
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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a2bus_computereyes2_device::a2bus_computereyes2_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) :
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device_t(mconfig, type, tag, owner, clock),
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device_a2bus_card_interface(mconfig, *this),
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m_picture(*this, "srcimg")
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{
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}
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a2bus_computereyes2_device::a2bus_computereyes2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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a2bus_computereyes2_device(mconfig, A2BUS_COMPUTEREYES2, tag, owner, clock)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void a2bus_computereyes2_device::device_start()
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{
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}
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void a2bus_computereyes2_device::device_reset()
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{
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m_x = m_y = 0;
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m_cer0 = m_cer2 = 0;
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m_cer1 = 0x80; // interface disabled
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}
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/*-------------------------------------------------
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read_c0nx - called for reads from this card's c0nx space
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CER0 read bits
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01 = capture data bit (read)
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10 = sync (read)
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20 = test bit (used in detection) (read)
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CER0 write bits
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0F = brightness (write)
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40 = monitor relay (write)
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80 = turn on test bit (write)
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CER1 write bits
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0F = contrast (guessing bits 0..3?)
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80 = interface on (bit 7)
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CER2 write bits
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(any) resets the threshold for a new pixel
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-------------------------------------------------*/
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uint8_t a2bus_computereyes2_device::read_c0nx(uint8_t offset)
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{
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switch (offset)
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{
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case 0:
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if (m_cer0 & 0x80)
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{
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return m_cer0 | 0x20;
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}
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else
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{
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u8 ret = (m_cer0 & 0xc0) | 0x10;
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u64 video_ticks = machine().time().as_ticks(1021800);
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int frame_time = video_ticks % (65 * 262); // 65 clocks per scanline, 262 scanlines per frame
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int h = frame_time % 65;
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int v = frame_time / 65;
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// generate sync bit
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if (v > 224)
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{
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// vsync
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ret &= ~0x10;
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}
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else if (h > 49)
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{
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// hsync
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ret &= ~0x10;
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}
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// is the interface enabled? (Active low, 0 = enabled)
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if (!(m_cer1 & 0x80))
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{
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{
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if (m_bActive)
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{
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//printf("read at X=%d Y=%d CX=%d CY=%d thr=%02x\n", h, v, m_x, m_y, m_threshold);
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ret |= (m_a2_bitmap[m_x + ((v-2) * 280)] > m_threshold) ? 0 : 1;
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if (m_threshold > 0x20)
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{
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m_threshold -= 0x20;
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}
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else
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{
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m_y++;
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if (m_y >= 192)
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{
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if (m_x < 280)
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{
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m_x++;
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}
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else
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{
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m_x = 0;
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}
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m_bActive = false;
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}
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}
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}
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/* else
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{
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printf("SYNC at X=%d Y=%d CX=%d CY=%d thr=%02x\n", h, v, m_x, m_y, m_threshold);
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}*/
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}
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}
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return ret;
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}
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break;
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case 1: return m_cer1;
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case 2: return m_cer2;
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}
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return 0;
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}
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/*-------------------------------------------------
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write_c0nx - called for writes to this card's c0nx space
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-------------------------------------------------*/
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void a2bus_computereyes2_device::write_c0nx(uint8_t offset, uint8_t data)
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{
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switch (offset)
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{
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case 0:
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m_cer0 = data & 0xcf;
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break;
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case 1:
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if (!(data & 0x80))
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{
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m_bActive = false;
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}
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m_y = 0;
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if (!(data & 0x80) && (m_cer1 & 0x80))
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{
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m_x = m_y = 0;
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std::fill_n(m_a2_bitmap, 280*193, 0);
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m_bitmap = &m_picture->get_bitmap();
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if (m_bitmap)
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{
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// convert arbitrary sized ARGB32 image to a 188x193 image with 256 levels of grayscale
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double stepx = (double)m_bitmap->width() / 188.0;
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double stepy = (double)m_bitmap->height() / 193.0;
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for (int y = 0; y < 193; y++)
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{
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for (int x = 0; x < 280; x++)
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{
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u32 pixel = m_bitmap->pix((int)((double)y * stepy), (int)((double)x * stepx));
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double mono = ((0.2126 * (double)(((pixel>>16) & 0xff) / 255.0)) +
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(0.7152 * (double)(((pixel>>8) & 0xff) / 255.0)) +
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(0.0722 * (double)((pixel& 0xff) / 255.0)));
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m_a2_bitmap[(y*280)+x] = (u8)(mono * 255.0);
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}
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}
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}
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}
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m_cer1 = data;
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break;
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case 2: // written to initialize a sample
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m_cer2 = data;
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m_threshold = 0xe0;
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if (!m_bActive)
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{
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m_y = 0;
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}
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m_bActive = true;
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break;
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}
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}
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55
src/devices/bus/a2bus/computereyes2.h
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55
src/devices/bus/a2bus/computereyes2.h
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@ -0,0 +1,55 @@
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// license:BSD-3-Clause
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// copyright-holders:R. Belmont
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/*********************************************************************
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computereyes2.h
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Implemention of the Digital Vision ComputerEyes/2 card
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*********************************************************************/
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#ifndef MAME_BUS_A2BUS_COMPEYES2_H
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#define MAME_BUS_A2BUS_COMPEYES2_H
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#pragma once
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#include "a2bus.h"
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#include "bitmap.h"
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#include "imagedev/picture.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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class a2bus_computereyes2_device:
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public device_t,
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public device_a2bus_card_interface
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{
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public:
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// construction/destruction
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a2bus_computereyes2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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protected:
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a2bus_computereyes2_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
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virtual void device_start() override;
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virtual void device_reset() override;
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virtual void device_add_mconfig(machine_config &config) override;
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// overrides of standard a2bus slot functions
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virtual uint8_t read_c0nx(uint8_t offset) override;
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virtual void write_c0nx(uint8_t offset, uint8_t data) override;
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private:
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required_device<picture_image_device> m_picture;
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int m_x, m_y, m_cer0, m_cer1, m_cer2;
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u8 m_a2_bitmap[280*193];
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u8 m_threshold;
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bool m_bActive;
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bitmap_argb32 *m_bitmap;
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};
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// device type definition
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DECLARE_DEVICE_TYPE(A2BUS_COMPUTEREYES2, a2bus_computereyes2_device)
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#endif // MAME_BUS_A2BUS_COMPEYES2_H
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@ -156,6 +156,7 @@ Address bus A0-A11 is Y0-Y11
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#include "bus/a2bus/transwarp.h"
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#include "bus/a2bus/a2vulcan.h"
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#include "bus/a2bus/4play.h"
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#include "bus/a2bus/computereyes2.h"
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#include "bus/a2gameio/gameio.h"
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@ -4432,6 +4433,7 @@ static void apple2_cards(device_slot_interface &device)
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device.option_add("twarp", A2BUS_TRANSWARP); /* AE TransWarp accelerator */
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device.option_add("vulcan", A2BUS_VULCANIIE); /* Applied Engineering Vulcan IDE drive */
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device.option_add("4play", A2BUS_4PLAY); /* 4Play Joystick Card (Rev. B) */
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device.option_add("ceyes2", A2BUS_COMPUTEREYES2); /* ComputerEyes/2 Video Digitizer */
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}
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static void apple2eaux_cards(device_slot_interface &device)
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