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jdm:pc9801:int18h

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jdm:pc9801:int18h [2021/12/25 12:08] – created asiejdm:pc9801:int18h [2022/02/18 22:44] (current) – asie
Line 12: Line 12:
  
 The keystroke is removed from the input buffer. The keystroke is removed from the input buffer.
 +
 +TODO: Blocks until a keystroke is received?
  
 ===== AH = 01h - Check Keystroke ===== ===== AH = 01h - Check Keystroke =====
Line 40: Line 42:
     * bit 3 - GRPH (pressed)     * bit 3 - GRPH (pressed)
     * bit 4 - CTRL (pressed)     * bit 4 - CTRL (pressed)
-    * +
 ===== AH = 03h - Initialize Keyboard Interface ===== ===== AH = 03h - Initialize Keyboard Interface =====
  
Line 55: Line 57:
 **Output** **Output**
  
-  * AH = keystroke bitmap value+  * AH = keystroke bitmap value (byte at ''52Ah + (AL & 0x0F)'') 
 + 
 +TODO 
 + 
 +===== AH = 05h - Get and Check Keystroke ===== 
 + 
 +**Input:** 
 + 
 +  * AH = 00h 
 + 
 +**Output:** 
 + 
 +  * AX = keystroke 
 +  * BH = 1 if keystroke in buffer, 0 otherwise. 
 + 
 +The keystroke is removed from the input buffer. 
 + 
 +Non-blocking. Seems to be a combination of AH = 01h and AH = 00h. 
 + 
 +===== AH = 0Ah - Set GDC Display Mode ==== 
 + 
 +TODO 
 + 
 +===== AH = 0Bh - Get GDC Display Mode ==== 
 + 
 +TODO 
 + 
 +===== AH = 0Ch - Enable GDC Text Layer ==== 
 + 
 +TODO 
 + 
 +===== AH = 0Dh - Disable GDC Text Layer ==== 
 + 
 +TODO 
 + 
 +===== AH = 0Eh - Set GDC Text Display Area ==== 
 + 
 +**Input:** 
 + 
 +  * AH = 0Eh 
 +  * DX = offset 
 + 
 +TODO 
 + 
 +===== AH = 11h - Show Cursor ==== 
 + 
 +**Input:** 
 + 
 +  * AH = 11h 
 + 
 +===== AH = 12h - Hide Cursor ==== 
 + 
 +**Input:** 
 + 
 +  * AH = 12h 
 + 
 +===== AH = 13h - Set Cursor Position ==== 
 + 
 +**Input:** 
 + 
 +  * AH = 13h 
 +  * DX = offset 
 + 
 +TODO 
 + 
 +===== AH = 14h - Read Custom Glyph ===== 
 + 
 +Input: 
 + 
 +  * AH = 14h 
 +  * BX:CX = glyph data destination (34 bytes, 16x16) 
 +  * DX = glyph code 
 + 
 +TODO 
 + 
 +===== AH = 16h - Fill Text Display ===== 
 + 
 +**Input:** 
 + 
 +  * AH = 16h 
 +  * DH = attribute 
 +  * DL = character 
 + 
 +===== AH = 17h ===== 
 + 
 +TODO 
 + 
 +===== AH = 18h ===== 
 + 
 +TODO 
 + 
 +===== AH = 1Ah - Write Custom Glyph ===== 
 + 
 +Input: 
 + 
 +  * AH = 1Ah 
 +  * BX:CX = glyph data (34 bytes, 16x16) 
 +  * DX = glyph code (must be 0x76xx or 0x77xx, count of custom glyphs limited) 
 + 
 +TODO 
 + 
 +===== AH = 31h ===== 
 + 
 +TODO 
 + 
 +===== AH = 40h - Enable Graphics Layer ===== 
 + 
 +Input: 
 + 
 +  * AH = 40h 
 + 
 +TODO 
 + 
 +===== AH = 41h - Disable Graphics Layer ===== 
 + 
 +Input: 
 + 
 +  * AH = 41h 
 + 
 +TODO 
 + 
 +===== AH = 42h - Configure Graphics Mode ===== 
 + 
 +TODO 
 + 
 +===== AH = 43h ===== 
 + 
 +TODO 
 + 
 +===== AH = 4Dh =====
  
 TODO TODO
jdm/pc9801/int18h.1640434108.txt.gz · Last modified: 2021/12/25 12:08 by asie