Int 15 Fn C9  - Newer Ps/2; Various Bioses - Get Cpu Type And Mask Revisi  [B]

   AH = C9h
   AL = 10h (may be required on some non-PS BIOSes)

Return: CF clear if successful
       AH = 00h
       CH = CPU type (see #0452)
       CL = mask revision (stepping level) (see #0453)
   CF set on error
       AH = status (80h,86h = function not supported)

Notes: the BIOS must save DX at startup in order to be able to support this
     call; PS/2 Models 56, 57, 90, and 95 are known to support it
   the PS/2 BIOS merely reads CMOS locations 190h (type) and 191h (rev)
   IBM classifies this function as optional

See Also: AX=D100h,AX=DA92h,MEM 0040h:00BCh

(Table 0452)
Values for CPU type:
 03h   80386DX or clone
 04h   80486
 05h   Pentium
 23h   80386SX or clone
 33h   Intel i376
 43h   80386SL or clone
 A3h   IBM 386SLC
 A4h   IBM 486SLC

(Table 0453)
Values for stepping level:
---i376 (type code 33h)---
 05h   A0
 08h   B
---80386/80386DX (type code 03h)---
 03h   Intel B1 to B10, Am386DX/DXL step A
 05h   Intel D0
 08h   Intel D1/D2/E1, Am386DX/DXL step B
---80386SL (type code 43h)---
 05h   A
 1xh   B
---80386SX (type code 23h)---
 04h   Intel A0
 05h   Intel B, Am386SX/SXL step A1
 08h   Intel C/D1, Am386SX/SXL step B
 09h   Intel 386CX/386EX/386SXstatic step A
---80486DX (type code 04h)---
 00h   Intel A0/A1
 01h   Intel B2 to B6
 02h   Intel C0
 03h   Intel C1
 04h   Intel D0
 10h   Intel cA2/cA3, Cx486SLC step A
 11h   Intel cB0/cB1
---486DX2 (type code 04h)---
 02h   Am486DX2 (unknown stepping)
 32h   Intel DX2/Overdrive steps A0 to A2
 33h   Intel DX2/Overdrive step B1
---486SX (type code 04h)---
 20h   Intel A0
 22h   Intel B0
 27h   Intel cA0
 28h   Intel cB0
---486SL (type code 04h)---
 40h   Intel A
---IntelSX2 (type code 04h)---
 5xh   Intel A
---IntelDX4 (type code 04h)---
 8xh   Intel A
---487SX (type code 04h)---
 20h   Intel A0
 21h   Intel B0
---Pentium (type code 05h)---
 0xh   Intel P5 steps Ax (1993)
 1xh   Intel P5 steps Bx (1994)
 2xh   Intel P54C step A
---RapidCAD (type code 03h)---
 40h   A