diff options
Diffstat (limited to 'src/mame/machine/pc9801_memsw.cpp')
-rw-r--r-- | src/mame/machine/pc9801_memsw.cpp | 150 |
1 files changed, 75 insertions, 75 deletions
diff --git a/src/mame/machine/pc9801_memsw.cpp b/src/mame/machine/pc9801_memsw.cpp index 33fb382fd08..93392aefc0f 100644 --- a/src/mame/machine/pc9801_memsw.cpp +++ b/src/mame/machine/pc9801_memsw.cpp @@ -2,77 +2,77 @@ // copyright-holders:Angelo Salese /*************************************************************************** - PC-9801 MEMSW interface - - A CMOS-like interface that maps in the TVRAM area - - Reference URL: - http://ohta.music.coocan.jp/packen/board/memsw.htm - Running the MON command under BASIC allows the user to change these - settings. - ssw -> for displaying current settings on screen; - ssw# -> to change the given # - - List of settings, parenthesis for default if not zero - SW1 $A3FE2 - xx-- ---- stop bit length (01) - --x- ---- parity specification - ---x ---- parity check - ---- xx-- data bit length (10) - ---- --x- communication method - ---- ---x X parameter - - SW2 $A3FE6 - x--- ---- S parameter - -x-- ---- line feed code when sending - --x- ---- line feed code when receiving - ---x ---- Japanese shift code - ---- xxxx transfer speed (0101) - - SW3 $A3FEA - x--- ---- Operation when DEL code is received (input / output mode) - x--- ---- Operation when DEL code is received (terminal mode) - -x-- ---- Text screen color - --x- ---- Maximum operating frequency for V30 coprocessor - ---x ---- With or without V30 coprocessor - ---- x--- Coprocessor for 80286,386 - ---- -xxx Conventional memory size (100) - - SW4 $A3FEE - x--- ---- Expansion ROM CE000-CFFFF - -x-- ---- Expansion ROM CA000-CBFFF - --x- ---- Expansion ROM D4000-D5FFF - ---x ---- Expansion ROM D0000-D3FFF - ---- x--- Expansion ROM CC000-CFFFF - ---- -x-- Expansion ROM C8000-C9FFF - ---- --xx (Unused) - - SW5 $A3FF2 - xxxx ---- Select boot device (0000) - 1100 ---- SCSI HDD #1 - 1011 ---- HDD #2 - 1010 ---- HDD #1 - 1000 ---- ROM BASIC - 0110 ---- MO disk - 0100 ---- 1MB FDD - 0010 ---- 640K FDD - 0000 ---- standard - ???? ---- ROM BASIC - ---- x--- Screen Hard copy color - ---- -x-- Use HDD user ID - ---- --x- Prioritize HDD with device name - ---- ---x PC-PR201 series used (1) - - SW5 $A3FF6 - --x- ---- Use modem-NCU control function - ---x ---- Extended screen hard copy function - ---- x--- Use monitor mode (Use extended monitor mode) - xx-- -xxx (Unused) - - - TODO: - - Is the mapping truly aligned to 2 bytes? Looks more like 4, needs real - HW verification. + PC-9801 MEMSW interface + + A CMOS-like interface that maps in the TVRAM area + + Reference URL: + http://ohta.music.coocan.jp/packen/board/memsw.htm + Running the MON command under BASIC allows the user to change these + settings. + ssw -> for displaying current settings on screen; + ssw# -> to change the given # + + List of settings, parenthesis for default if not zero + SW1 $A3FE2 + xx-- ---- stop bit length (01) + --x- ---- parity specification + ---x ---- parity check + ---- xx-- data bit length (10) + ---- --x- communication method + ---- ---x X parameter + + SW2 $A3FE6 + x--- ---- S parameter + -x-- ---- line feed code when sending + --x- ---- line feed code when receiving + ---x ---- Japanese shift code + ---- xxxx transfer speed (0101) + + SW3 $A3FEA + x--- ---- Operation when DEL code is received (input / output mode) + x--- ---- Operation when DEL code is received (terminal mode) + -x-- ---- Text screen color + --x- ---- Maximum operating frequency for V30 coprocessor + ---x ---- With or without V30 coprocessor + ---- x--- Coprocessor for 80286,386 + ---- -xxx Conventional memory size (100) + + SW4 $A3FEE + x--- ---- Expansion ROM CE000-CFFFF + -x-- ---- Expansion ROM CA000-CBFFF + --x- ---- Expansion ROM D4000-D5FFF + ---x ---- Expansion ROM D0000-D3FFF + ---- x--- Expansion ROM CC000-CFFFF + ---- -x-- Expansion ROM C8000-C9FFF + ---- --xx (Unused) + + SW5 $A3FF2 + xxxx ---- Select boot device (0000) + 1100 ---- SCSI HDD #1 + 1011 ---- HDD #2 + 1010 ---- HDD #1 + 1000 ---- ROM BASIC + 0110 ---- MO disk + 0100 ---- 1MB FDD + 0010 ---- 640K FDD + 0000 ---- standard + ???? ---- ROM BASIC + ---- x--- Screen Hard copy color + ---- -x-- Use HDD user ID + ---- --x- Prioritize HDD with device name + ---- ---x PC-PR201 series used (1) + + SW5 $A3FF6 + --x- ---- Use modem-NCU control function + ---x ---- Extended screen hard copy function + ---- x--- Use monitor mode (Use extended monitor mode) + xx-- -xxx (Unused) + + + TODO: + - Is the mapping truly aligned to 2 bytes? Looks more like 4, needs real + HW verification. ***************************************************************************/ @@ -129,10 +129,10 @@ void pc9801_memsw_device::nvram_default() const uint8_t default_memsw_data[0x10] = { - 0xe1, 0x48, 0xe1, 0x05, - 0xe1, 0x04, 0xe1, 0x00, - 0xe1, 0x01, 0xe1, 0x00, - 0xe1, 0x00, 0xe1, 0x00 + 0xe1, 0x48, 0xe1, 0x05, + 0xe1, 0x04, 0xe1, 0x00, + 0xe1, 0x01, 0xe1, 0x00, + 0xe1, 0x00, 0xe1, 0x00 }; memcpy(m_bram, default_memsw_data, m_bram_size); |