P2 VGA Text driver

Comments

• cgracey Posts: 14,277

  2014-02-15 04:35 edited 2014-02-15 04:35

  Neat! It looks like you've got the CLU_xxxx modes working.
• ozpropdev Posts: 2,793

  2014-02-15 04:53 edited 2014-02-15 04:53

  cgracey wrote: »

  Neat! It looks like you've got the CLU_xxxx modes working.

  
  I ended up doing a bit of dynamic shuffling of color data in aux to get the result I wanted.
  When we have 200MHz, there should be enough cycles to use CLU4_RGB24 or even CLU8_RGB24 mode.
  Cheers
  Brian
• ozpropdev Posts: 2,793

  2014-02-15 17:53 edited 2014-02-15 17:53

  Hi All
  
  I forgot to mention that the driver can easily support 50x37 characters as well.
  To achieve the 16x16 font I "cheated" and use every second font line of the 16x32 font.
  I doesn't look too bad.
  
  If anyone has time to create a 16x16 font this could be enhanced.
  This would also reduce the size of the font table from 16K to 8K!
  
  Cheers
  Brian

  

  

  50x37 chars.jpg

  1024 x 613 - 158K

  spin

  spin

  P2_VGA_text_v1_01.spin

  63K

  50x37 chars.jpg 158K

  P2_VGA_text_v1_01.spin 62.8K
• ozpropdev Posts: 2,793

  2014-02-15 19:10 edited 2014-02-15 19:10

  For DE0-Nano users with current FPGA code.
  
  Because the current Nano update does not support MUL32,GETMULL the following code changes are required.
  
  Comment out the MUL32 and GETMULL lines.
  Add two longs named m1,m2 and insert the code below.
  

  		'	mul32	text_row,#50 * 2	'*100 (2 bytes per character)
  
  			mov	m1,text_row		' x 100
  			shl	m1,#6
  			mov	m2,text_row
  			shl	m2,#5
  			add	m1,m2
  			mov	m2,text_row
  			shl	m2,#2
  			add	m1,m2
  			mov	text_row,m1
  
  

  
  Brian
• Sapieha Posts: 2,964

  2014-03-24 03:18 edited 2014-03-24 03:18

  Hi Brian.
  
  It is possible You made comments in this block.
  That show what character every block represents.
  
  I will made me different chars both in X and Y coordinates
  

  ' Char x1
          word    $FFFF,$FFFF,$FFFF,$FFFF,$000F,$000F,$000F,$000F
          word    $000F,$000F,$000F,$000F,$000F,$000F,$000F,$000F
          word    $000F,$000F,$000F,$000F,$000F,$000F,$000F,$000F
          word    $000F,$000F,$000F,$000F,$FFFF,$FFFF,$FFFF,$FFFF
  ' Char x2
          word    $0000,$0000,$0000,$0000,$0000,$0000,$0000,$0000
          word    $0000,$0000,$0040,$0060,$0070,$0078,$7FFC,$7FFE
          word    $7FFE,$7FFC,$0078,$0070,$0060,$0040,$0000,$0000
          word    $0000,$0000,$0000,$0000,$0000,$0000,$0000,$0000
  ' Char x3
  
  and so on
  

  
  
  
  

  ozpropdev wrote: »

  Hi All
  
  I forgot to mention that the driver can easily support 50x37 characters as well.
  To achieve the 16x16 font I "cheated" and use every second font line of the 16x32 font.
  I doesn't look too bad.
  
  If anyone has time to create a 16x16 font this could be enhanced.
  This would also reduce the size of the font table from 16K to 8K!
  
  Cheers
  Brian
• ozpropdev Posts: 2,793

  2014-03-24 04:17 edited 2014-03-24 04:17

  Sapieha
  The attached file might help.
  Cheers
  Brian

  txt

  txt

  FONT 16x32.txt

  345K

  FONT 16x32.txt 345K
• Sapieha Posts: 2,964

  2014-03-24 04:34 edited 2014-03-24 04:34

  Hi Brian.
  
  That was all I need
  
  Thanks.
  
  

  ozpropdev wrote: »

  Sapieha
  The attached file might help.
  Cheers
  Brian