Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-10-05 08:41:31 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

Merge pull request #792 from fulivi/hp9845_dev

Browse Source 
Improvements to tape driver of hp9845b [F.Ulivi]
This commit is contained in:
Miodrag Milanović 2016-04-07 13:06:09 +02:00
commit 6b545d47e8
4 changed files with 971 additions and 682 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/devices/cpu/hphybrid/hphybrid.cpp
View File

@ -1459,7 +1459,7 @@ UINT32 hp_5061_3001_cpu_device::add_mae(aec_cases_t aec_case , UINT16 addr)
bool top_half = BIT(addr , 15) != 0;
// Detect accesses to top half of base page
if (aec_case == AEC_CASE_C && (addr & 0xfe00) == 0xfe00) {
if ((aec_case == AEC_CASE_C || aec_case == AEC_CASE_I) && (addr & 0xfe00) == 0xfe00) {
aec_case = AEC_CASE_B;
}

967
src/devices/machine/hp_taco.cpp
View File

File diff suppressed because it is too large Load Diff

29
src/devices/machine/hp_taco.h
View File

@ -47,6 +47,7 @@ public:
virtual bool call_load() override;
virtual bool call_create(int format_type, option_resolution *format_options) override;
virtual void call_unload() override;
virtual void call_display() override;
virtual iodevice_t image_type() const override { return IO_MAGTAPE; }
virtual bool is_readable() const override { return true; }
virtual bool is_writeable() const override { return true; }
@ -84,14 +85,29 @@ private:
UINT16 m_cmd_reg;
UINT16 m_status_reg;
UINT16 m_tach_reg;
tape_pos_t m_tach_reg_ref;
bool m_tach_reg_frozen;
UINT16 m_checksum_reg;
bool m_clear_checksum_reg;
UINT16 m_timing_reg;
// State
bool m_irq;
bool m_flg;
bool m_sts;
UINT8 m_cmd_state;
// Command FSM state
typedef enum {
CMD_IDLE,
CMD_INVERTING,
CMD_PH0,
CMD_PH1,
CMD_PH2,
CMD_PH3,
CMD_END,
CMD_STOPPING
} cmd_state_t;
cmd_state_t m_cmd_state;
// Tape position & motion
tape_pos_t m_tape_pos;
@ -126,17 +142,19 @@ private:
void clear_state(void);
void irq_w(bool state);
void set_error(bool state);
bool is_braking(void) const;
unsigned speed_to_tick_freq(void) const;
bool pos_offset(tape_pos_t& pos , tape_pos_t offset) const;
void move_tape_pos(tape_pos_t delta_pos);
tape_pos_t current_tape_pos(void) const;
void update_tape_pos(void);
void update_tach_reg(void);
void freeze_tach_reg(bool freeze);
static void ensure_a_lt_b(tape_pos_t& a , tape_pos_t& b);
static bool any_hole(tape_pos_t tape_pos_a , tape_pos_t tape_pos_b);
tape_pos_t next_hole(void) const;
attotime time_to_distance(tape_pos_t distance) const;
attotime time_to_target(tape_pos_t target) const;
attotime time_to_stopping_pos(void) const;
bool start_tape_cmd(UINT16 cmd_reg , UINT16 must_be_1 , UINT16 must_be_0);
void start_tape(UINT16 cmd_reg);
void stop_tape(void);
tape_track_t& current_track(void);
static tape_pos_t word_length(tape_word_t w);
@ -150,6 +168,7 @@ private:
adv_res_t adv_it(tape_track_t::iterator& it);
attotime fetch_next_wr_word(void);
attotime time_to_rd_next_word(tape_pos_t& word_rd_pos);
tape_pos_t min_gap_size(void) const;
bool next_n_gap(tape_pos_t& pos , tape_track_t::iterator it , unsigned n_gaps , tape_pos_t min_gap);
bool next_n_gap(tape_pos_t& pos , unsigned n_gaps , tape_pos_t min_gap);
void clear_tape(void);
@ -160,6 +179,8 @@ private:
void set_tape_present(bool present);
attotime time_to_next_hole(void) const;
attotime time_to_tach_pulses(void) const;
void terminate_cmd_now(void);
void cmd_fsm(void);
void start_cmd_exec(UINT16 new_cmd_reg);
};

15
src/mame/drivers/hp9845.cpp
View File

@ -44,7 +44,10 @@
// Base address of video buffer
#define VIDEO_BUFFER_BASE 0x17000
#define MAX_WORD_PER_ROW 600
// For test "B" of alpha video to succeed this must be < 234
// Basically "B" test is designed to intentionally prevent line buffer to be filled so that display is blanked
// from 2nd row on. This in turn prevents "BAD" text to be visible on screen.
#define MAX_WORD_PER_ROW 220
#define VIDEO_CHAR_WIDTH 9
#define VIDEO_CHAR_HEIGHT 15
@ -412,10 +415,14 @@ void hp9845b_state::video_render_buff(unsigned line_in_row, bool buff_idx)
m_video_blanked = true;
}
if (m_video_blanked) {
// TODO: blank scanline
} else {
const rgb_t *palette = m_palette->palette()->entry_list_raw();
if (m_video_blanked) {
// Blank scanline
for (unsigned i = 0; i < (80 * 9); i++) {
m_bitmap.pix32(m_video_scanline , i) = palette[ 0 ];
}
} else {
bool cursor_line = line_in_row == 12;
bool ul_line = line_in_row == 14;
bool cursor_blink = BIT(m_video_frame , 3);