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added a Traditional Chinese font ROM info

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Akamaki
2025-02-13 20:10:23 +09:00
committed by GitHub
parent eeb10651da
commit 9ab1e35b16
1 changed files with 21 additions and 23 deletions
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src/video/vid_ps55da2.c
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@@ -1533,34 +1533,32 @@ The IBM 5550 character mode addresses video memory between E0000h and E0FFFh.
DOS Bunsho Program transfers 1/2 and 1/4 fonts fron the font ROM to the Extended SBCS.
This bit is not used for DBCS, but some apps set it as that column is right half of DBCS.
[Font ROM Map (DA2)]
The Font ROM is accessed via 128 KB memory window located on A0000-BFFFFh.
I don't know how much data the actual Font ROM has.
Here information, I researched it by disassembling J-DOS.
[Font ROM Map (DA2, Japanese)]
The Font ROM can be accessed via 128 KB memory window located at A0000-BFFFFh.
Bank 0
Bank 0
4800- *
Bank 1, 2, 3
* - *
Bank 4
* -0DB6Fh ( 4800-8DB6Fh;IBMJ 100-1F7Dh) : JIS X 0208 DBCS (24 x 24)
10000-16D1Fh (90000-96D1Fh;IBMJ 2000-2183h) : IBM Extended Characters
18000-1BFCFh (98000-9BFCFh;around IBMJ 21C7-22AAh) : JIS X 0201 SBCS (13 x 30)
1C000-1FFFFh (9C000-9FFFFh;around IBMJ 22AA-238Eh) : Codepage 437 characters (13 x 30)
Bank 5
00000-0C68Fh (A0000-AC68Fh;around IBMJ 238E-2650h) : Gaiji (24 x 24)
* -0D09Fh (9FD20-AD09Fh;IBMJ 2384-2673h) : Gaiji 752 chs (maybe blank)
10000-13FFFh (B0000-B3FFFh;around IBMJ 271C-27FFh) : Extended SBCS (13 x 30)
14000-147FFh (B4000-B46FFh;IBMJ 2800-2818h) : Half-width box drawing characters (7 lines * 4 parts * 64 bytes) used by DOS Bunsho
16000-17FFFh (B6000-B7FFFh;around IBMJ h) : Codepage 850 characters (13 x 30)
18000-1A3FFh (B8000-BA3FFh;around IBMJ h) : Shape Icons? (32 x 32)
(B9580-?;IBMJ 2930-295e?) : Full-width box drawing characters
Bank 1, 2, 3
* - *
Bank 4
* -0DB6Fh ( 4800-8DB6Fh) : JIS X 0208 DBCS (24 x 24) (IBMJ code: 100-1F7Dh)
10000-16D1Fh (90000-96D1Fh) : IBM Extended Characters (IBMJ code: 2ADC-2C5Fh)
18000-1BFCFh (98000-9BFCFh) : JIS X 0201 SBCS (13 x 30)
1C000-1FFFFh (9C000-9FFFFh) : Codepage 437 characters (13 x 30)
Bank 5
00000-0C68Fh (A0000-AC68Fh) : Gaiji used by DOS Bunsho
10000-13FFFh (B0000-B3FFFh) : Extended SBCS (13 x 30)
14000-1477Fh (B4000-B477Fh) : Half-width box drawing characters used by DOS Bunsho
16000-17FFFh (B6000-B7FFFh) : Codepage 850 characters (13 x 30)
18000-1A3FFh (B8000-BA3FFh) : CAD control icons and box drawing characters (32 x 32)
Some models have the signature 80h, 01h placed at Bank 0:1AFFEh. (it disables hardware text drawing in OS/2 J1.3)
[Font ROM Map (DA3, Traditional Chinese)]
Bank 0 - 11 : Valid Font ROM data
Bank 12 : Alias of bank 11 (At least, DOS T5.0 uses this on purpose.)
Bank 13 : All addresses return 0xFF
[Gaiji RAM Map (DA2)]
Bank 0 00000-1FFFFh placed between A0000h-BFFFFh
00000-1F7FFh(A0000-BF7FFh): Gaiji Non-resident (Kuten 103-114 ku,IBM: 2674-2ADBh) 1008 chs 128 bytes