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A few more comments with insights on what device may be mapped to each i/o address.

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Felipe Corrêa da Silva Sanches 2015-06-11 13:24:26 -03:00
parent e3b38c60e6
commit d85c22ae29
1 changed files with 7 additions and 1 deletions
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8
src/mess/drivers/i7000.c
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@ -203,13 +203,19 @@ static ADDRESS_MAP_START( i7000_io , AS_IO, 8, i7000_state)
AM_RANGE(0x18, 0x1b) AM_DEVREADWRITE("pit8253", pit8253_device, read, write)
// AM_RANGE(0x1c, 0x1c) AM_WRITE(i7000_io_printer_data_w) //ASCII data
// AM_RANGE(0x1e, 0x1e) AM_READ(i7000_io_printer_status_r)
// AM_RANGE(0x1d, 0x1d) AM_READ(i7000_io_?_w)
// AM_RANGE(0x1e, 0x1e) AM_READWRITE(i7000_io_printer_status_r, i7000_io_?_w)
// AM_RANGE(0x1f, 0x1f) AM_WRITE(i7000_io_printer_strobe_w) //self-test routine writes 0x08 and 0x09 (it seems that bit 0 is the strobe and bit 3 is an enable signal)
AM_RANGE(0x20, 0x21) AM_READ(i7000_io_keyboard_r)
// AM_RANGE(0x24, 0x24) AM_READ(i7000_io_?_r)
// AM_RANGE(0x25, 0x25) AM_READWRITE(i7000_io_?_r, i7000_io_?_w)
// AM_RANGE(0x28, 0x2d) AM_READWRITE(i7000_io_joystick_r, i7000_io_joystick_w)
// AM_RANGE(0x3b, 0x3b) AM_READWRITE(i7000_io_?_r, i7000_io_?_w)
// AM_RANGE(0x66, 0x67) AM_READWRITE(i7000_io_?_r, i7000_io_?_w)
// AM_RANGE(0xbb, 0xbb) AM_WRITE(i7000_io_?_w) //may be related to page-swapping...
ADDRESS_MAP_END
DEVICE_IMAGE_LOAD_MEMBER( i7000_state, i7000_card )