Unitech MR350MKII manual Ascii code corresponded to scan code in Alphabetic mode, DOS Manager

ASCII code corresponded to scan code in Alphabetic mode

Alphabetic mode keyboard layout

F1	F5	QZ.	ABC	DEF
??	*
F2	F6	GHI	JKL	MNO
??	?
F3	F7	PRS	TUV	WXY
??	?
F4	SHIF	[C]	-SP+	[E]
??	T

ASCII code, ASCII code, ASCII code

[Scan code, Scan code, Scan code]

86	8A	51,5A,2E	41,42,43	44,45,46
[23]	[1B]	[24,25,26]	[27,28,29]	[2A,2B,2C]
87	8B	47,48,49	4A,4B,4C	4D,4E,4F
[22]	[1A]	[2D,2E,2F	[30,31,32]	[33,34,35]
		]
88	8C	50,52,53	54,55,56	57,58,59
[21]	[19]	[36,37,38]	[39,3A,3B]	[3C,3D,3E]
89	1F	08	2D,20,2B	0D
[20]	[18]	[10]	[1D,1E,1F	[00]
			]

Figure 3-2 ASCII code vs. scan code cross reference table (alphabetic-mode)

3.8.DOS Manager

The following MS/DOS function calls are emulated by MR350MKII. The calling convention is identical to that of MS/DOS, i.e. INT 21H with function code in registered AH. The parameter passing mechanism is also identical to the MS/DOS convention. Unsupported DOS calls are returned with a completion status code immediately. Please refer to MS/DOS Technical Reference Manual for further details.

Standard Input/Output

01 Read stdin (wait if no key) and write it to stdout

No check on control keys (ESC)

Entry Parameters:	AH = 01
Returned Values:	AL = 8-bit data

unsigned char TS_stdin()

{

regs.h.ah= 1; int86(0x21,®s,®s); return(regs.h.al);

}

02 Write stdout

Entry Parameters: AH = 02

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