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Manage VT100 character sets
This commit is contained in:
Laurent Vivier
parent
e97734ac1a
commit
afa4db753e
130
second/vga.c
130
second/vga.c
@ -17,6 +17,118 @@
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QDGlobals qd;
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#define CHARSET_0 0
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#define CHARSET_A 1
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#define CHARSET_B 2
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static unsigned char translation[][256] = {
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/* VT100 Graphics to IBM CP-437 0 */
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{
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
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0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
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0x28, 0x29, 0x2a, 0x1a, 0x1b, 0x18, 0x19, 0x2f,
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0xdb, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
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0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
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0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
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0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
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0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
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0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0xa0,
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0x00, 0xb1, 0x00, 0x00, 0x00, 0x00, 0xb0, 0xb1,
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0xb0, 0x00, 0xd9, 0xbf, 0xda, 0xc0, 0xc5, 0x00,
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0x00, 0xc4, 0x00, 0x00, 0xc3, 0xb4, 0xc1, 0xc2,
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0xb3, 0xf3, 0xf2, 0xe3, 0x00, 0x9c, 0xb7, 0x7f,
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
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0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
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0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
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0xa0, 0xa1, 0x9b, 0x9c, 0xa4, 0x9d, 0xa6, 0x15,
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0xa8, 0xa9, 0xa6, 0xab, 0xaa, 0xad, 0xae, 0xaf,
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0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0x14, 0xb7,
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0xb8, 0xb9, 0xa7, 0xaf, 0xac, 0xab, 0xbe, 0xa8,
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0xc0, 0xc1, 0xc2, 0xc3, 0x8e, 0x8f, 0x92, 0x80,
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0xc8, 0x90, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
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0xd0, 0xa5, 0xd2, 0xd3, 0xd4, 0xd5, 0x99, 0xd7,
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0xd8, 0xd9, 0xda, 0xdb, 0x9a, 0xdd, 0xde, 0xdf,
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0x85, 0xa0, 0x83, 0xe3, 0x84, 0x86, 0x91, 0x87,
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0x8a, 0x82, 0x88, 0x89, 0x8d, 0xa1, 0x8c, 0x8b,
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0xf0, 0xa4, 0x95, 0xa2, 0x93, 0xf5, 0x94, 0xf6,
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0xf8, 0x97, 0xa3, 0x96, 0x81, 0xfd, 0xfe, 0x98,
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},
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/* UK ASCII to IBM CP-437 A */
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{
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
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0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
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0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
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0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
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0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
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0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
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0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
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0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
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0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
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0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
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0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
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0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
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0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
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0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
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0x5f, 0xa1, 0x9b, 0x7d, 0xa4, 0x9d, 0xa6, 0x15,
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0xa8, 0xa9, 0xa6, 0xab, 0xaa, 0xad, 0xae, 0xaf,
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0x66, 0x67, 0xb2, 0xb3, 0xb4, 0xb5, 0x14, 0x7e,
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0xb8, 0xb9, 0xa7, 0xaf, 0xac, 0xab, 0xbe, 0xa8,
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0xc0, 0xc1, 0xc2, 0xc3, 0x8e, 0x8f, 0x92, 0x80,
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0xc8, 0x90, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
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0xd0, 0xa5, 0xd2, 0xd3, 0xd4, 0xd5, 0x99, 0xd7,
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0xd8, 0xd9, 0xda, 0xdb, 0x9a, 0xdd, 0xde, 0xdf,
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0x85, 0xa0, 0x83, 0xe3, 0x84, 0x86, 0x91, 0x87,
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0x8a, 0x82, 0x88, 0x89, 0x8d, 0xa1, 0x8c, 0x8b,
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0xf0, 0xa4, 0x95, 0xa2, 0x93, 0xf5, 0x94, 0xf6,
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0xf8, 0x97, 0xa3, 0x96, 0x81, 0xfd, 0xfe, 0x98,
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},
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/* US ASCII to IBM CP-437 B */
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{
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
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0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
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0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
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0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
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0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
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0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
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0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
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0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
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0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
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0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
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0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
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0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
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0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
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0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
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0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
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0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
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0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
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0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
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0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
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0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
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0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
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0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
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0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
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0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
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0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
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0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
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}
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};
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#define VT100_STACK_SIZE 16
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typedef struct vga_handler {
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@ -37,6 +149,7 @@ typedef struct vga_handler {
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int escape_level;
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char escape_stack[VT100_STACK_SIZE];
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unsigned long saved_x, saved_y;
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int charset;
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} vga_handler_t ;
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@ -440,6 +553,7 @@ vga_init()
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vga.siz_h = vga.height / 16;
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vga.mask = 0xFF;
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vga.escape_level= 0;
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vga.charset = CHARSET_B;
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vga_cursor(0);
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vga_clear();
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@ -514,6 +628,19 @@ vga_put(char c)
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vga.pos_y = vga.saved_y;
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goto exit_escape;
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case '(': /* character set selection */
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if (vga.escape_level <= 2)
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goto exit;
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if (vga.escape_stack[1] == '0')
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vga.charset = CHARSET_0;
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else if (vga.escape_stack[1] == 'A')
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vga.charset = CHARSET_A;
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else if (vga.escape_stack[1] == 'B')
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vga.charset = CHARSET_B;
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goto exit_escape;
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case '[':
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if (vga.escape_level <= 2)
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goto exit;
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@ -604,7 +731,8 @@ vga_put(char c)
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vga.escape_level = 1;
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break;
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default:
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draw_byte((unsigned char)c, vga.pos_x++, vga.pos_y);
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draw_byte(translation[vga.charset][(unsigned char)c],
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vga.pos_x++, vga.pos_y);
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if (vga.pos_x >= vga.siz_w) {
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vga.pos_x = 0;
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vga.pos_y++;
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