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(nw) rx78 : small cleanup of driver
This commit is contained in:
Robbbert
parent
dfbe49136f
commit
6c37bae992
@ -2,42 +2,48 @@
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// copyright-holders:Angelo Salese, Robbbert
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/************************************************************************************************************
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Gundam RX-78 (c) 1983 Bandai
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Gundam RX-78 (c) 1983 Bandai
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driver by Angelo Salese & Robbbert.
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Driver by Angelo Salese & Robbbert.
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TODO:
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- implement printer;
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- Challenge Golf: has gfx and input bugs (starts with home/end keys!?);
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TODO:
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- implement printer;
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- Challenge Golf: has gfx and input bugs (starts with home/end keys!?);
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- Colours are incorrect
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Notes:
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- BS-BASIC v1.0 have a graphic bug with the RX-78 logo, it doesn't set the read bank so all of the color
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info minus plane 1 is lost when the screen scrolls vertically. Almost certainly a btanb.
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- To stop a cmt load, press STOP + SHIFT keys
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Notes:
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- BS-BASIC v1.0 have a graphic bug with the RX-78 logo, it doesn't set the read bank so all of the color
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info minus plane 1 is lost when the screen scrolls vertically. Almost certainly a btanb.
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- To stop a cmt load, press STOP + SHIFT keys
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Known programs:
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- BS_BASIC V1.0
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- Challenge Golf
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- Tennis
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==============================================================================================================
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Summary of Monitor commands.
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- The monitor is entered at bootup. The prompt is the * character. This is followed by a command
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letter (upper case). Some commands require hex parameters. You must enter all 4 characters of
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these. No spaces allowed except where shown.
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- While in BASIC, you may enter the monitor by using the MON command. After you have finished,
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you can return to BASIC by entering the command *J2005.
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Summary of Monitor commands.
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- The monitor is entered at bootup. The prompt is the * character. This is followed by a command
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letter (upper case). Some commands require hex parameters. You must enter all 4 characters of
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these. No spaces allowed except where shown.
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- While in BASIC, you may enter the monitor by using the MON command. After you have finished,
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you can return to BASIC by entering the command *J2005.
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- Tape commands:
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*L Load a tape
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*V Verify a tape
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*S Save a block of memory to tape. You are asked for a filename (blank is allowed), the start address,
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the end address, and the Jump address (where it should begin execution)
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- Tape commands:
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*L Load a tape
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*V Verify a tape
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*S Save a block of memory to tape. You are asked for a filename (blank is allowed), the start address,
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the end address, and the Jump address (where it should begin execution)
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- Memory commands:
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*Dnnnn nnnn Displays a hex dump in the address range entered
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*Mnnnn Allows you to examine and modify memory. Enter to skip to next, period (.) to quit.
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*Jnnnn Transfer execution (Jump) to a program in memory at the specified address
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- Memory commands:
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*Dnnnn nnnn Displays a hex dump in the address range entered
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*Mnnnn Allows you to examine and modify memory. Enter to skip to next, period (.) to quit.
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*Jnnnn Transfer execution (Jump) to a program in memory at the specified address
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- Other:
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*R This is a block transfer load from a mystery parallel device, using ports E0 and E1,
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using handshaking similar to a centronics printer. The incoming file is loaded into
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memory and it appears that the operator is not provided any information of what happened.
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- Other:
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*R This is a block transfer load from a mystery parallel device, using ports E0 and E1,
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using handshaking similar to a centronics printer. The incoming file is loaded into
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memory and it appears that the operator is not provided any information of what happened.
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*************************************************************************************************************/
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@ -57,78 +63,73 @@ class rx78_state : public driver_device
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{
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public:
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rx78_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu"),
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m_cass(*this, "cassette"),
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m_cart(*this, "cartslot"),
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m_ram(*this, RAM_TAG),
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m_palette(*this, "palette")
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{ }
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: driver_device(mconfig, type, tag)
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, m_maincpu(*this, "maincpu")
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, m_cass(*this, "cassette")
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, m_cart(*this, "cartslot")
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, m_ram(*this, RAM_TAG)
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, m_palette(*this, "palette")
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{ }
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DECLARE_READ8_MEMBER( key_r );
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DECLARE_READ8_MEMBER( rx78_f0_r );
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DECLARE_READ8_MEMBER( rx78_vram_r );
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DECLARE_WRITE8_MEMBER( rx78_f0_w );
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DECLARE_WRITE8_MEMBER( rx78_vram_w );
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DECLARE_READ8_MEMBER( cass_r );
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DECLARE_READ8_MEMBER( vram_r );
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DECLARE_WRITE8_MEMBER( cass_w );
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DECLARE_WRITE8_MEMBER( vram_w );
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DECLARE_WRITE8_MEMBER( vram_read_bank_w );
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DECLARE_WRITE8_MEMBER( vram_write_bank_w );
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DECLARE_WRITE8_MEMBER( key_w );
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DECLARE_WRITE8_MEMBER( vdp_reg_w );
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DECLARE_WRITE8_MEMBER( vdp_bg_reg_w );
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DECLARE_WRITE8_MEMBER( vdp_pri_mask_w );
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DECLARE_DEVICE_IMAGE_LOAD_MEMBER( rx78_cart );
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DECLARE_DRIVER_INIT(rx78);
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uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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private:
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uint8_t m_vram_read_bank;
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uint8_t m_vram_write_bank;
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uint8_t m_pal_reg[7];
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uint8_t m_pri_mask;
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uint8_t m_key_mux;
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virtual void machine_reset() override;
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virtual void video_start() override;
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uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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DECLARE_DRIVER_INIT(rx78);
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required_device<cpu_device> m_maincpu;
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required_device<cassette_image_device> m_cass;
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required_device<generic_slot_device> m_cart;
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required_device<ram_device> m_ram;
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required_device<palette_device> m_palette;
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DECLARE_DEVICE_IMAGE_LOAD_MEMBER( rx78_cart );
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};
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#define MASTER_CLOCK XTAL_28_63636MHz
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WRITE8_MEMBER( rx78_state::rx78_f0_w )
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WRITE8_MEMBER( rx78_state::cass_w )
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{
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m_cass->output(BIT(data, 0) ? -1.0 : +1.0);
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}
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READ8_MEMBER( rx78_state::rx78_f0_r )
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READ8_MEMBER( rx78_state::cass_r )
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{
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return (m_cass->input() > 0.03);
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}
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void rx78_state::video_start()
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{
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}
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uint32_t rx78_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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uint8_t *vram = memregion("vram")->base();
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int x,y,count;
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const int borderx = 32,bordery = 20;
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int color,pen[3];
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const int borderx = 32, bordery = 20;
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bitmap.fill(16, cliprect);
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count = 0x2c0; //first 0x2bf bytes aren't used for bitmap drawing apparently
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int count = 0x2c0; //first 0x2bf bytes aren't used for bitmap drawing apparently
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for(y=0;y<184;y++)
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for(u8 y=0; y<184; y++)
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{
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for(x=0;x<192;x+=8)
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for(u8 x=0; x<192; x+=8)
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{
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int color,pen[3],i;
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for (i = 0; i < 8; i++)
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for (u8 i = 0; i < 8; i++)
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{
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/* bg color */
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pen[0] = (m_pri_mask & 0x08) ? (vram[count + 0x6000] >> (i)) : 0x00;
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@ -171,10 +172,8 @@ READ8_MEMBER( rx78_state::key_r )
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if(m_key_mux == 0x30) //status read
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{
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int res,i;
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res = 0;
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for(i=0;i<15;i++)
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u8 res = 0;
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for(u8 i=0; i<15; i++)
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res |= ioport(keynames[i])->read();
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return res;
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@ -191,7 +190,7 @@ WRITE8_MEMBER( rx78_state::key_w )
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m_key_mux = data;
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}
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READ8_MEMBER( rx78_state::rx78_vram_r )
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READ8_MEMBER( rx78_state::vram_r )
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{
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uint8_t *vram = memregion("vram")->base();
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@ -201,16 +200,13 @@ READ8_MEMBER( rx78_state::rx78_vram_r )
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return vram[offset + ((m_vram_read_bank - 1) * 0x2000)];
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}
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WRITE8_MEMBER( rx78_state::rx78_vram_w )
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WRITE8_MEMBER( rx78_state::vram_w )
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{
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uint8_t *vram = memregion("vram")->base();
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if(m_vram_write_bank & 0x01) { vram[offset + 0 * 0x2000] = data; }
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if(m_vram_write_bank & 0x02) { vram[offset + 1 * 0x2000] = data; }
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if(m_vram_write_bank & 0x04) { vram[offset + 2 * 0x2000] = data; }
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if(m_vram_write_bank & 0x08) { vram[offset + 3 * 0x2000] = data; }
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if(m_vram_write_bank & 0x10) { vram[offset + 4 * 0x2000] = data; }
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if(m_vram_write_bank & 0x20) { vram[offset + 5 * 0x2000] = data; }
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for (u8 i = 0; i < 6; i++)
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if (BIT(m_vram_write_bank, i))
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vram[offset + i * 0x2000] = data;
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}
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WRITE8_MEMBER( rx78_state::vram_read_bank_w )
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@ -262,11 +258,11 @@ WRITE8_MEMBER( rx78_state::vdp_pri_mask_w )
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static ADDRESS_MAP_START(rx78_mem, AS_PROGRAM, 8, rx78_state)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x0000, 0x1fff) AM_ROM
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AM_RANGE(0x0000, 0x1fff) AM_ROM AM_REGION("roms", 0)
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//AM_RANGE(0x2000, 0x5fff) // mapped by the cartslot
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AM_RANGE(0x6000, 0xafff) AM_RAM //ext RAM
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AM_RANGE(0xb000, 0xebff) AM_RAM
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AM_RANGE(0xec00, 0xffff) AM_READWRITE(rx78_vram_r, rx78_vram_w)
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AM_RANGE(0xec00, 0xffff) AM_READWRITE(vram_r, vram_w)
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ADDRESS_MAP_END
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static ADDRESS_MAP_START(rx78_io, AS_IO, 8, rx78_state)
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@ -274,10 +270,10 @@ static ADDRESS_MAP_START(rx78_io, AS_IO, 8, rx78_state)
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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// AM_RANGE(0xe2, 0xe2) AM_READNOP AM_WRITENOP //printer
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// AM_RANGE(0xe3, 0xe3) AM_WRITENOP //printer
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AM_RANGE(0xf0, 0xf0) AM_READWRITE(rx78_f0_r,rx78_f0_w) //cmt
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AM_RANGE(0xf0, 0xf0) AM_READWRITE(cass_r, cass_w) //cmt
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AM_RANGE(0xf1, 0xf1) AM_WRITE(vram_read_bank_w)
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AM_RANGE(0xf2, 0xf2) AM_WRITE(vram_write_bank_w)
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AM_RANGE(0xf4, 0xf4) AM_READWRITE(key_r,key_w) //keyboard
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AM_RANGE(0xf4, 0xf4) AM_READWRITE(key_r, key_w) //keyboard
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AM_RANGE(0xf5, 0xfb) AM_WRITE(vdp_reg_w) //vdp
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AM_RANGE(0xfc, 0xfc) AM_WRITE(vdp_bg_reg_w) //vdp
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AM_RANGE(0xfe, 0xfe) AM_WRITE(vdp_pri_mask_w)
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@ -352,7 +348,7 @@ static INPUT_PORTS_START( rx78 )
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PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Up") PORT_CODE(KEYCODE_UP)
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PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Right") PORT_CODE(KEYCODE_RIGHT)
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PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Left") PORT_CODE(KEYCODE_LEFT)
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PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("HOME / CLR") PORT_CODE(KEYCODE_HOME)
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PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("CLR / HOME") PORT_CODE(KEYCODE_HOME)
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PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_UNUSED )
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PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("INST / DEL") PORT_CODE(KEYCODE_BACKSPACE)
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@ -362,7 +358,7 @@ static INPUT_PORTS_START( rx78 )
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PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_UNUSED )
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PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
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PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_UNUSED )
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PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("SHIFT LOCK") PORT_CODE(KEYCODE_CAPSLOCK)
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PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("SFT LOCK") PORT_CODE(KEYCODE_CAPSLOCK)
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PORT_START("KEY8")
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PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) //kana shift?
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@ -449,7 +445,7 @@ static const gfx_layout rx78_charlayout =
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};
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static GFXDECODE_START( rx78 )
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GFXDECODE_ENTRY( "maincpu", 0x1a27, rx78_charlayout, 0, 8 )
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GFXDECODE_ENTRY( "roms", 0x1a27, rx78_charlayout, 0, 8 )
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GFXDECODE_END
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@ -499,7 +495,7 @@ MACHINE_CONFIG_END
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/* ROM definition */
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ROM_START( rx78 )
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ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
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ROM_REGION( 0x2000, "roms", 0 )
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ROM_LOAD( "ipl.rom", 0x0000, 0x2000, CRC(a194ea53) SHA1(ba39e73e6eb7cbb8906fff1f81a98964cd62af0d))
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ROM_REGION( 6 * 0x2000, "vram", ROMREGION_ERASE00 )
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