void atari_motion_objects_device::draw(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
// compute start/stop bands
int startband = ((cliprect.min_y + m_yscroll - m_slipoffset) & m_bitmapymask) >> m_slipshift;
int stopband = ((cliprect.max_y + m_yscroll - m_slipoffset) & m_bitmapymask) >> m_slipshift;
if (startband > stopband)
startband -= m_bitmapheight >> m_slipshift;
if (m_slipshift == 0)
stopband = startband;
// loop over SLIP bands
for (int band = startband; band <= stopband; band++)
{
// compute the starting link and clip for the current band
rectangle bandclip = cliprect;
int link = 0;
if (m_slipshift != 0)
{
// extract the link from the SLIP RAM
link = (m_slipram[band & m_sliprammask] >> m_linkmask.shift()) & m_linkmask.mask();
// compute minimum Y and wrap around if necessary
bandclip.min_y = ((band << m_slipshift) - m_yscroll + m_slipoffset) & m_bitmapymask;
if (bandclip.min_y >= bitmap.height())
bandclip.min_y -= m_bitmapheight;
// maximum Y is based on the minimum
bandclip.max_y = bandclip.min_y + (1 << m_slipshift) - 1;
// keep within the cliprect
bandclip &= cliprect;
}
// if this matches the last link, we don't need to re-process the list
build_active_list(link);
// set the start and end points
UINT16 *first, *last;
int step;
if (m_reverse)
{
first = m_activelast - 4;
// TODO: this sets last to index m_activelist[-4]
last = m_activelist - 4;
step = -4;
}
else
{
first = m_activelist;
last = m_activelast;
step = 4;
}
// initialize the parameters
m_next_xpos = 123456;
// render the mos
for (UINT16 *current = first; current != last; current += step)
render_object(bitmap, bandclip, current);
}
// Disable an I2C port
void
i2c_disable(int port)
{
if (port >= 0 && port < I2C_N_PORTS && i2c_ports[port]) {
i2c_port *p = i2c_ports[port];
U32 pinmask = p->scl_pin | p->sda_pin;
*AT91C_PIOA_ODR = pinmask;
system_free((byte *)p);
i2c_ports[port] = NULL;
build_active_list();
sp_reset(port);
}
}
// Enable an I2C port
// returns > 0 OK, == 0 no memory < 0 error
int i2c_enable(int port, int mode)
{
if (port >= 0 && port < I2C_N_PORTS) {
U32 pinmask;
i2c_port *p = i2c_ports[port];
// Allocate memory if required
if (!p)
{
p = (i2c_port *) system_allocate(sizeof(i2c_port));
if (!p) return 0;
i2c_ports[port] = p;
}
p->scl_pin = sensor_pins[port].pins[SP_DIGI0];
p->sda_pin = sensor_pins[port].pins[SP_DIGI1];
pinmask = p->scl_pin | p->sda_pin;
p->state = I2C_IDLE;
/* Set clock pin for output, open collector driver, with
* pullups enabled. Set data to be enabled for output with
* pullups disabled.
*/
*AT91C_PIOA_SODR = pinmask;
*AT91C_PIOA_OER = pinmask;
*AT91C_PIOA_MDER = p->scl_pin;
*AT91C_PIOA_PPUDR = p->sda_pin;
*AT91C_PIOA_PPUER = p->scl_pin;
/* If we are always active, we never drop below the ACTIVEIDLE state */
p->lego_mode = ((mode & I2C_LEGO_MODE) ? 1 : 0);
p->no_release = ((mode & I2C_NO_RELEASE) ? 1 : 0);
p->always_active = ((mode & I2C_ALWAYS_ACTIVE) ? 1 : 0);
if (p->always_active) {
p->state = I2C_ACTIVEIDLE;
build_active_list();
}
return 1;
}
return -1;
}
/* execute the next command in command buffer; return error status */
static int exec_command( const char ** const ibufpp, const int prev_status,
const bool isglobal )
{
const char * fnp;
int gflags = 0;
int addr, c, n;
const int addr_cnt = extract_addr_range( ibufpp );
if( addr_cnt < 0 ) return ERR;
*ibufpp = skip_blanks( *ibufpp );
c = *(*ibufpp)++;
switch( c )
{
case 'a': if( !get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !append_lines( ibufpp, second_addr, isglobal ) ) return ERR;
break;
case 'c': if( first_addr == 0 ) first_addr = 1;
if( second_addr == 0 ) second_addr = 1;
if( !check_current_addr( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !delete_lines( first_addr, second_addr, isglobal ) ||
!append_lines( ibufpp, current_addr(), isglobal ) ) return ERR;
break;
case 'd': if( !check_current_addr( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !delete_lines( first_addr, second_addr, isglobal ) ) return ERR;
inc_current_addr();
break;
case 'e': if( modified() && !scripted() && prev_status != EMOD )
return EMOD; /* fall through */
case 'E': if( unexpected_address( addr_cnt ) ||
unexpected_command_suffix( **ibufpp ) ) return ERR;
fnp = get_filename( ibufpp );
if( !fnp || !delete_lines( 1, last_addr(), isglobal ) ||
!close_sbuf() ) return ERR;
if( !open_sbuf() ) return FATAL;
if( fnp[0] && fnp[0] != '!' ) set_def_filename( fnp );
if( traditional() && !fnp[0] && !def_filename[0] )
{ set_error_msg( "No current filename" ); return ERR; }
if( read_file( fnp[0] ? fnp : def_filename, 0 ) < 0 )
return ERR;
reset_undo_state(); set_modified( false );
break;
case 'f': if( unexpected_address( addr_cnt ) ||
unexpected_command_suffix( **ibufpp ) ) return ERR;
fnp = get_filename( ibufpp );
if( !fnp ) return ERR;
if( fnp[0] == '!' )
{ set_error_msg( "Invalid redirection" ); return ERR; }
if( fnp[0] ) set_def_filename( fnp );
printf( "%s\n", strip_escapes( def_filename ) );
break;
case 'g':
case 'v':
case 'G':
case 'V': if( isglobal )
{ set_error_msg( "Cannot nest global commands" ); return ERR; }
n = ( c == 'g' || c == 'G' ); /* mark matching lines */
if( !check_addr_range( 1, last_addr(), addr_cnt ) ||
!build_active_list( ibufpp, first_addr, second_addr, n ) )
return ERR;
n = ( c == 'G' || c == 'V' ); /* interactive */
if( ( n && !get_command_suffix( ibufpp, &gflags ) ) ||
!exec_global( ibufpp, gflags, n ) )
return ERR;
break;
case 'h':
case 'H': if( unexpected_address( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( c == 'H' ) verbose = !verbose;
if( ( c == 'h' || verbose ) && errmsg[0] )
fprintf( stderr, "%s\n", errmsg );
break;
case 'i': if( second_addr == 0 ) second_addr = 1;
if( !get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !append_lines( ibufpp, second_addr - 1, isglobal ) )
return ERR;
break;
case 'j': if( !check_addr_range( current_addr(), current_addr() + 1, addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( first_addr != second_addr &&
!join_lines( first_addr, second_addr, isglobal ) ) return ERR;
break;
case 'k': n = *(*ibufpp)++;
if( second_addr == 0 ) { invalid_address(); return ERR; }
if( !get_command_suffix( ibufpp, &gflags ) ||
!mark_line_node( search_line_node( second_addr ), n ) )
return ERR;
break;
case 'l':
case 'n':
case 'p': if( c == 'l' ) n = GLS; else if( c == 'n' ) n = GNP; else n = GPR;
if( !check_current_addr( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ||
!display_lines( first_addr, second_addr, gflags | n ) )
return ERR;
gflags = 0;
break;
case 'm': if( !check_current_addr( addr_cnt ) ||
!get_third_addr( ibufpp, &addr ) ) return ERR;
if( addr >= first_addr && addr < second_addr )
{ set_error_msg( "Invalid destination" ); return ERR; }
if( !get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !move_lines( first_addr, second_addr, addr, isglobal ) )
return ERR;
break;
case 'P':
case 'q':
case 'Q': if( unexpected_address( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( c == 'P' ) prompt_on = !prompt_on;
else if( modified() && !scripted() && c == 'q' &&
prev_status != EMOD ) return EMOD;
else return QUIT;
break;
case 'r': if( unexpected_command_suffix( **ibufpp ) ) return ERR;
if( addr_cnt == 0 ) second_addr = last_addr();
fnp = get_filename( ibufpp );
if( !fnp ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !def_filename[0] && fnp[0] != '!' ) set_def_filename( fnp );
if( traditional() && !fnp[0] && !def_filename[0] )
{ set_error_msg( "No current filename" ); return ERR; }
addr = read_file( fnp[0] ? fnp : def_filename, second_addr );
if( addr < 0 ) return ERR;
if( addr ) set_modified( true );
break;
case 's': if( !command_s( ibufpp, &gflags, addr_cnt, isglobal ) )
return ERR;
break;
case 't': if( !check_current_addr( addr_cnt ) ||
!get_third_addr( ibufpp, &addr ) ||
!get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !copy_lines( first_addr, second_addr, addr ) ) return ERR;
break;
case 'u': if( unexpected_address( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ||
!undo( isglobal ) ) return ERR;
break;
case 'w':
case 'W': n = **ibufpp;
if( n == 'q' || n == 'Q' ) ++*ibufpp;
if( unexpected_command_suffix( **ibufpp ) ) return ERR;
fnp = get_filename( ibufpp );
if( !fnp ) return ERR;
if( addr_cnt == 0 && last_addr() == 0 )
first_addr = second_addr = 0;
else if( !check_addr_range( 1, last_addr(), addr_cnt ) )
return ERR;
if( !def_filename[0] && fnp[0] != '!' ) set_def_filename( fnp );
if( traditional() && !fnp[0] && !def_filename[0] )
{ set_error_msg( "No current filename" ); return ERR; }
addr = write_file( fnp[0] ? fnp : def_filename,
( c == 'W' ) ? "a" : "w", first_addr, second_addr );
if( addr < 0 ) return ERR;
if( addr == last_addr() ) set_modified( false );
else if( modified() && !scripted() && n == 'q' &&
prev_status != EMOD ) return EMOD;
if( n == 'q' || n == 'Q' ) return QUIT;
break;
case 'x': if( second_addr < 0 || last_addr() < second_addr )
{ invalid_address(); return ERR; }
if( !get_command_suffix( ibufpp, &gflags ) ) return ERR;
if( !isglobal ) clear_undo_stack();
if( !put_lines( second_addr ) ) return ERR;
break;
case 'y': if( !check_current_addr( addr_cnt ) ||
!get_command_suffix( ibufpp, &gflags ) ||
!yank_lines( first_addr, second_addr ) ) return ERR;
break;
case 'z': first_addr = 1;
if( !check_addr_range( first_addr, current_addr() +
( traditional() || !isglobal ), addr_cnt ) )
return ERR;
if( **ibufpp > '0' && **ibufpp <= '9' )
{ if( parse_int( &n, *ibufpp, ibufpp ) ) set_window_lines( n );
else return ERR; }
if( !get_command_suffix( ibufpp, &gflags ) ||
!display_lines( second_addr, min( last_addr(), second_addr + window_lines() ),
gflags ) )
return ERR;
gflags = 0;
break;
case '=': if( !get_command_suffix( ibufpp, &gflags ) ) return ERR;
printf( "%d\n", addr_cnt ? second_addr : last_addr() );
break;
case '!': if( unexpected_address( addr_cnt ) ) return ERR;
fnp = get_shell_command( ibufpp );
if( !fnp ) return ERR;
if( system( fnp + 1 ) < 0 )
{ set_error_msg( "Can't create shell process" ); return ERR; }
if( !scripted() ) printf( "!\n" );
break;
case '\n': first_addr = 1;
if( !check_addr_range( first_addr, current_addr() +
( traditional() || !isglobal ), addr_cnt ) ||
!display_lines( second_addr, second_addr, 0 ) )
return ERR;
break;
case '#': while( *(*ibufpp)++ != '\n' ) ;
break;
default : set_error_msg( "Unknown command" ); return ERR;
}
if( gflags && !display_lines( current_addr(), current_addr(), gflags ) )
return ERR;
return 0;
}
