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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. 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. This bit is not used for DBCS, but some apps set it as that column is right half of DBCS.
[Font ROM Map (DA2)] [Font ROM Map (DA2, Japanese)]
The Font ROM is accessed via 128 KB memory window located on A0000-BFFFFh. The Font ROM can be accessed via 128 KB memory window located at A0000-BFFFFh.
I don't know how much data the actual Font ROM has.
Here information, I researched it by disassembling J-DOS.
Bank 0 Bank 0
4800- * 4800- *
Bank 1, 2, 3 Bank 1, 2, 3
* - * * - *
Bank 4 Bank 4
* -0DB6Fh ( 4800-8DB6Fh;IBMJ 100-1F7Dh) : JIS X 0208 DBCS (24 x 24) * -0DB6Fh ( 4800-8DB6Fh) : JIS X 0208 DBCS (24 x 24) (IBMJ code: 100-1F7Dh)
10000-16D1Fh (90000-96D1Fh;IBMJ 2000-2183h) : IBM Extended Characters 10000-16D1Fh (90000-96D1Fh) : IBM Extended Characters (IBMJ code: 2ADC-2C5Fh)
18000-1BFCFh (98000-9BFCFh;around IBMJ 21C7-22AAh) : JIS X 0201 SBCS (13 x 30) 18000-1BFCFh (98000-9BFCFh) : JIS X 0201 SBCS (13 x 30)
1C000-1FFFFh (9C000-9FFFFh;around IBMJ 22AA-238Eh) : Codepage 437 characters (13 x 30) 1C000-1FFFFh (9C000-9FFFFh) : Codepage 437 characters (13 x 30)
Bank 5 Bank 5
00000-0C68Fh (A0000-AC68Fh;around IBMJ 238E-2650h) : Gaiji (24 x 24) 00000-0C68Fh (A0000-AC68Fh) : Gaiji used by DOS Bunsho
10000-13FFFh (B0000-B3FFFh) : Extended SBCS (13 x 30)
* -0D09Fh (9FD20-AD09Fh;IBMJ 2384-2673h) : Gaiji 752 chs (maybe blank) 14000-1477Fh (B4000-B477Fh) : Half-width box drawing characters used by DOS Bunsho
10000-13FFFh (B0000-B3FFFh;around IBMJ 271C-27FFh) : Extended SBCS (13 x 30) 16000-17FFFh (B6000-B7FFFh) : Codepage 850 characters (13 x 30)
18000-1A3FFh (B8000-BA3FFh) : CAD control icons and box drawing characters (32 x 32)
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
Some models have the signature 80h, 01h placed at Bank 0:1AFFEh. (it disables hardware text drawing in OS/2 J1.3) 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)] [Gaiji RAM Map (DA2)]
Bank 0 00000-1FFFFh placed between A0000h-BFFFFh 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 00000-1F7FFh(A0000-BF7FFh): Gaiji Non-resident (Kuten 103-114 ku,IBM: 2674-2ADBh) 1008 chs 128 bytes