Disassembly cleanup
This commit is contained in:
Jeff Parsons
parent
27075b3443
commit
95b7e80c4b
4 changed files with 567 additions and 823 deletions
File diff suppressed because it is too large
Load diff
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@ -24,30 +24,29 @@
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mov [0x10e],cs ; 00000083 8C0E0E01 '....'
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sti ; 00000087 FB '.'
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mov byte [0x489],0x11 ; 00000088 C606890411 '.....'
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;
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; Initialize the ROM BIOS Video Mode Options byte @40:0087 (default to color and 256Kb of RAM)
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;
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;
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; Initialize the ROM BIOS Video Mode Options byte @40:0087 (default to color and 256Kb of RAM)
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;
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mov byte [0x487],0x60 ; 0000008D
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;
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; The x100 subroutine alternately enables port 0x3B? and 0x3D? decoding, verifying that there is
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; no response on opposing ports 0x3D? and 0x3B?, respectively; otherwise, it assumes that another
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; video card must exist and attempts to select co-existing settings for the VGA. For example, if
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; there is an unexpected response on the color ports, the VGA ROM will default to mono operation.
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;
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;
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; The x100 subroutine alternately enables port 0x3B? and 0x3D? decoding, verifying that there is
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; no response on opposing ports 0x3D? and 0x3B?, respectively; otherwise, it assumes that another
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; video card must exist and attempts to select co-existing settings for the VGA. For example, if
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; there is an unexpected response on the color ports, the VGA ROM will default to mono operation.
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;
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call x100 ; 00000092
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;
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; From the "IBM Personal System/2 Model 50 and 60 Technical Reference: I/O Controllers, Video Subsystem", p.4-29:
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;
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; When in setup mode (I/O address hex 0094, bit 5 equals 0), the VGA responds to a single option select byte
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; at I/O address hex 0102 and treats the LSB (bit 0) of that byte as the VGA sleep bit. When the LSB equals 0,
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; the VGA does not respond to commands, addresses, or data, on the data bus. When the LSB equals 1, the VGA
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; responds. If the VGA was set up and is generating video output when the LSB is set to 0, the output is still
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; generated.
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; When in setup mode (I/O address hex 0094, bit 5 equals 0), the VGA responds to a single option select byte
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; at I/O address hex 0102 and treats the LSB (bit 0) of that byte as the VGA sleep bit. When the LSB equals 0,
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; the VGA does not respond to commands, addresses, or data, on the data bus. When the LSB equals 1, the VGA
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; responds. If the VGA was set up and is generating video output when the LSB is set to 0, the output is still
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; generated.
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;
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; The VGA responds only to address hex 0102 when in the setup mode. No other addresses are valid at that time.
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; Conversely, the VGA ignores address hex 0102 when in the enabled mode (I/O address hex 0094, bit 5 equals 1),
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; and decodes normal I/O and memory addresses.
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; The VGA responds only to address hex 0102 when in the setup mode. No other addresses are valid at that time.
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; Conversely, the VGA ignores address hex 0102 when in the enabled mode (I/O address hex 0094, bit 5 equals 1),
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; and decodes normal I/O and memory addresses.
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;
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cli ; 00000095 FA '.'
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mov dx,0x46e8 ; 00000096 BAE846 '..F'
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@ -65,33 +64,28 @@
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sti ; 000000B1 FB '.'
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push cs ; 000000B2 0E '.'
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pop es ; 000000B3 07 '.'
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;
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; Default to mono settings
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;
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;
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; Default to mono settings
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;
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mov di,0x3b4 ; 000000B4 BFB403 '...'
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mov bx,0x1602 ; 000000B7 BB0216 '...'
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;
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; Test bit 1 of ROM BIOS Video Mode Options byte @40:0087 (set if mono, clear if color)
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;
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;
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; Test bit 1 of ROM BIOS Video Mode Options byte @40:0087 (set if mono, clear if color)
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;
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test byte [0x487],0x2 ; 000000BA F606870402 '.....'
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jnz xc7 ; 000000BF 7506 'u.'
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;
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; Choose color settings
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;
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;
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; Choose color settings
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;
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mov di,0x3d4 ; 000000C1 BFD403 '...'
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mov bx,0x1642 ; 000000C4 BB4216 '.B.'
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;
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; Set the CRTC base port address (0x3B4 for mono, 0x3D4 for color)
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;
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;
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; Set the CRTC base port address (0x3B4 for mono, 0x3D4 for color)
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;
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xc7: mov [0x463],di ; 000000C7 893E6304 '.>c.'
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;
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; Program the card for a default mode
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;
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;
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; Program the card for a default mode
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;
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call x1127 ; 000000CB E85910 '.Y.'
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xor al,al ; 000000CE 32C0 '2.'
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@ -6906,10 +6900,9 @@ x3765: dec ax ; 00003765 48 'H'
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dw font_8x14_supp ; 00003787 8D4D '.M'
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dw font_8x16 ; 0000378A BA4E '.N'
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dw font_8x16_supp ; 0000378B BA5E '.^'
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;
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; 8x8 font (8 bytes per row, one row per character)
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;
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;
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; 8x8 font (8 bytes per row, one row per character)
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;
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font_8x8:
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db 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ; 0x0000378D ........
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db 0x7E,0x81,0xA5,0x81,0xBD,0x99,0x81,0x7E ; 0x00003795 ~......~
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@ -7168,10 +7161,9 @@ font_8x8_hi:
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db 0x70,0x18,0x30,0x60,0x78,0x00,0x00,0x00 ; 0x00003F75 p.0`x...
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db 0x00,0x00,0x3C,0x3C,0x3C,0x3C,0x00,0x00 ; 0x00003F7D ........
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db 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ; 0x00003F85 ........
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;
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; 8x14 font (14 bytes per row, one row per character)
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;
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;
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; 8x14 font (14 bytes per row, one row per character)
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;
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font_8x14:
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db 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ; 0x00003F8D ..............
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db 0x00,0x00,0x7E,0x81,0xA5,0x81,0x81,0xBD,0x99,0x81,0x7E,0x00,0x00,0x00 ; 0x00003F9B ..~.......~...
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@ -7429,10 +7421,9 @@ font_8x14:
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db 0x00,0x70,0xD8,0x30,0x60,0xC8,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ; 0x00004D63 .p.0`.........
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db 0x00,0x00,0x00,0x00,0x7C,0x7C,0x7C,0x7C,0x7C,0x7C,0x00,0x00,0x00,0x00 ; 0x00004D71 ....||||||....
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db 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ; 0x00004D7F ..............
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;
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; 8x14 supplemental
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;
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;
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; 8x14 supplemental
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;
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font_8x14_supp:
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db 0x1D,0x00,0x00,0x00,0x00,0x24,0x66,0xFF,0x66,0x24,0x00,0x00,0x00,0x00,0x00 ; 0x00004D8D .....$f.f$.....
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db 0x22,0x00,0x63,0x63,0x63,0x22,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ; 0x00004D9C ".ccc".........
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@ -7455,10 +7446,9 @@ font_8x14_supp:
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db 0xF1,0x00,0x00,0x18,0x18,0x18,0xFF,0x18,0x18,0x18,0x00,0xFF,0x00,0x00,0x00 ; 0x00004E9B ...............
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db 0xF6,0x00,0x00,0x18,0x18,0x00,0x00,0xFF,0x00,0x00,0x18,0x18,0x00,0x00,0x00 ; 0x00004EAA ...............
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db 0x00 ; end-of-supplemental terminator
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;
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; 8x16 font (16 bytes per row, one row per character)
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;
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;
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; 8x16 font (16 bytes per row, one row per character)
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;
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font_8x16:
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db 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ; 0x00004EBA ................
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db 0x00,0x00,0x7E,0x81,0xA5,0x81,0x81,0xBD,0x99,0x81,0x81,0x7E,0x00,0x00,0x00,0x00 ; 0x00004ECA ..~........~....
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@ -7716,10 +7706,9 @@ font_8x16:
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db 0x00,0x70,0xD8,0x30,0x60,0xC8,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ; 0x00005E8A .p.0`...........
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db 0x00,0x00,0x00,0x00,0x7C,0x7C,0x7C,0x7C,0x7C,0x7C,0x7C,0x00,0x00,0x00,0x00,0x00 ; 0x00005E9A ....|||||||.....
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db 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ; 0x00005EAA ................
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;
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; 8x16 supplemental
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;
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;
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; 8x16 supplemental
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;
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font_8x16_supp:
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db 0x1D,0x00,0x00,0x00,0x00,0x00,0x24,0x66,0xFF,0x66,0x24,0x00,0x00,0x00,0x00,0x00,0x00 ; 0x00005EBA ......$f.f$......
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db 0x30,0x00,0x00,0x3C,0x66,0xC3,0xC3,0xDB,0xDB,0xC3,0xC3,0x66,0x3C,0x00,0x00,0x00,0x00 ; 0x00005ECB 0...f......f.....
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@ -605,11 +605,11 @@ ChipSet.TIMER_TICKS_PER_SEC = 1193181;
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* I'm guessing that's just part of some "diagnostic mode", because all it writes to PPI_A.PORT are a series
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* of "checkpoint" values (ie, 0x01, 0x02, and 0x03) before updating PPI_CTRL.PORT with the usual 0x99.
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*/
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ChipSet.PPI_A = { // this.bPPIA
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ChipSet.PPI_A = { // this.bPPIA (port 0x60)
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PORT: 0x60 // INPUT: keyboard scan code (PPI_B.CLEAR_KBD must be clear)
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};
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ChipSet.PPI_B = { // this.bPPIB
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ChipSet.PPI_B = { // this.bPPIB (port 0x61)
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PORT: 0x61, // OUTPUT (although it has to be treated as INPUT, too: the keyboard interrupt handler reads it, OR's PPI_B.CLEAR_KBD, writes it, and then rewrites the original read value)
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CLK_TIMER2: 0x01, // ALL: set to enable clock to TIMER2
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SPK_TIMER2: 0x02, // ALL: set to connect output of TIMER2 to speaker (MODEL_5150: clear for cassette)
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@ -622,7 +622,7 @@ ChipSet.PPI_B = { // this.bPPIB
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CLEAR_KBD: 0x80 // ALL: clear to enable keyboard scan codes (MODEL_5150: set to enable SW1 through PPI_A.PORT)
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};
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ChipSet.PPI_C = { // this.bPPIC
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ChipSet.PPI_C = { // this.bPPIC (port 0x62)
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PORT: 0x62, // INPUT (see below)
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SW: 0x0F, // MODEL_5150: SW2[1-4] or SW2[5], depending on whether PPI_B.ENABLE_SW2 is set or clear; MODEL_5160: SW1[1-4] or SW1[5-8], depending on whether PPI_B.ENABLE_SW_HI is clear or set
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CASS_DATA_IN: 0x10,
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@ -631,7 +631,7 @@ ChipSet.PPI_C = { // this.bPPIC
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RW_PARITY_CHK: 0x80 // used by NMI handler to detect R/W memory parity errors
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};
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ChipSet.PPI_CTRL = { // this.bPPICtrl
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ChipSet.PPI_CTRL = { // this.bPPICtrl (port 0x63)
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PORT: 0x63, // OUTPUT: initialized to 0x99, defining PPI_A and PPI_C as INPUT and PPI_B as OUTPUT
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A_IN: 0x10,
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B_IN: 0x02,
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176
notes.md
176
notes.md
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@ -70,178 +70,14 @@ Node "Cheat Sheet"
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Installing Node (and NPM)
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---
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I downloaded the latest Node installation package for my MacBook from [nodejs.org](http://nodejs.org/),
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which provided the usual `node` and `npm` commands. Here are the versions they reported:
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I downloaded and installed Node v0.11.11 [node-v0.11.11.pkg](http://nodejs.org/dist/v0.11.11/node-v0.11.11.pkg),
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which appears to be the newest version of Node that does *not* suffer from a [serious regression](https://github.com/joyent/node/issues/9310)
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on OS X. In newer versions of Node, the REPL blocks execution of the application until keys are typed.
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[~/Sites/pcjs] node -v
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v0.10.26
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[~/Sites/pcjs] npm -v
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1.4.3
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I also installed a Node helper on my MacBook called `n` that makes it easy to keep Node up-to-date, per this tip on
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[stackoverflow](http://stackoverflow.com/questions/8191459/how-to-update-node-js-npm-and-all-other-dependencies):
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That Node package came bundled with its own version of NPM as well: v1.3.25.
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1) Clear NPM's cache:
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[~/Sites/pcjs] sudo npm cache clean -f
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2) Install a little helper called 'n':
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[~/Sites/pcjs] sudo npm install -g n
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3) Install latest stable NodeJS version:
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[~/Sites/pcjs] sudo n stable
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Alternatively pick a specific version and install like so:
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[~/Sites/pcjs] sudo n 0.8.20
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I'm not sure I like the generic name for this command ("n"); what would have been wrong with "node-update"
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or "update-node"? Oh well.
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Next, I wanted to make sure `npm` was up-to-date. According to
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[FAQ on npmjs.org](https://npmjs.org/doc/faq.html#How-do-I-update-npm), that's as easy as:
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[~/Sites/pcjs] sudo npm update npm -g
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although occasionally `npm` won't be able to update itself, in which case the fallback is:
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[~/Sites/pcjs] curl https://npmjs.org/install.sh | sh
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So, I made sure `npm` itself, along with `n` and all my other globally installed packages, were up-to-date,
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and then I used `n` to make sure I was running the latest stable version of Node:
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[~/Sites/pcjs] sudo npm update -g
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[~/Sites/pcjs] sudo n stable
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[~/Sites/pcjs] node -v
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v0.10.26
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I've also seen suggestions to run this command before the preceding commands, but I don't know how often this is
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recommended:
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[~/Sites/pcjs] sudo npm cache clean -f
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Next, I ran `npm init`:
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[~/Sites/pcjs] npm adduser
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Username: jeffpar
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Password:
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Email: (this IS public) jeff@pcjs.org
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npm http PUT http://registry.npmjs.org/-/user/org.couchdb.user:jeffpar
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npm http 201 http://registry.npmjs.org/-/user/org.couchdb.user:jeffpar
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[~/Sites/pcjs] npm init
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This utility will walk you through creating a package.json file.
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It only covers the most common items, and tries to guess sane defaults.
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See `npm help json` for definitive documentation on these fields
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and exactly what they do.
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Use `npm install <pkg> --save` afterwards to install a package and
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save it as a dependency in the package.json file.
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Press ^C at any time to quit.
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name: (pcjs)
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version: (0.0.0) 0.1.0
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description: Node-enabled version of PCjs
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entry point: (server.js)
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test command:
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git repository: (git://github.com/jeffpar/pcjs.git)
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keywords: pcjs,ibm pc,emulator
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author: Jeff Parsons <Jeff@pcjs.org>
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license: (ISC)
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About to write to /Users/Jeff/Sites/pcjs/package.json:
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{
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"name": "pcjs",
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"version": "0.1.0",
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"description": "Node-enabled version of PCjs",
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"main": "server.js",
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"directories": {
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"doc": "docs",
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"test": "tests"
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},
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"repository": {
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"type": "git",
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"url": "git://github.com/jeffpar/pcjs.git"
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},
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"keywords": [
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"pcjs",
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"ibm",
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"pc",
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"emulator"
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],
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"author": "Jeff Parsons <Jeff@pcjs.org>",
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"license": "ISC",
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"bugs": {
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"url": "https://github.com/jeffpar/pcjs/issues"
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},
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"homepage": "http://www.pcjs.org/"
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}
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Is this ok? (yes)
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Next, I installed `express` using `npm install --save express`:
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[~/Sites/pcjs] npm install --save express
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npm http GET http://registry.npmjs.org/express
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...
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express@3.4.8 node_modules/express
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├── methods@0.1.0
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├── merge-descriptors@0.0.1
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├── range-parser@0.0.4
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├── cookie-signature@1.0.1
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├── fresh@0.2.0
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├── debug@0.7.4
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├── buffer-crc32@0.2.1
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├── cookie@0.1.0
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├── mkdirp@0.3.5
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├── commander@1.3.2 (keypress@0.1.0)
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├── send@0.1.4 (mime@1.2.11)
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└── connect@2.12.0 (uid2@0.0.3, pause@0.0.1, qs@0.6.6, bytes@0.2.1, raw-body@1.1.2, batch@0.5.0, negotiator@0.3.0, multiparty@2.2.0)
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This added the following lines to my "package.json" file:
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"dependencies": {
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"express": "~3.4.8"
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}
|
||||
|
||||
Then I created a test "server.js" in the root of the project:
|
||||
|
||||
var http = require("http");
|
||||
var express = require("express");
|
||||
var app = express();
|
||||
app.get("/", function(req, res) {
|
||||
res.end("Testing");
|
||||
});
|
||||
http.createServer(app).listen(3000);
|
||||
|
||||
and ran `node server.js` and verified that all was working as expected.
|
||||
|
||||
Updating Node (and NPM)
|
||||
---
|
||||
|
||||
So as per above, I ran:
|
||||
|
||||
[~/Sites/pcjs] sudo n stable
|
||||
|
||||
which reported:
|
||||
|
||||
install : v0.12.1
|
||||
mkdir : /usr/local/n/versions/0.12.1
|
||||
fetch : http://nodejs.org/dist/v0.12.1/node-v0.12.1-darwin-x64.tar.gz
|
||||
installed : v0.12.1
|
||||
|
||||
Unfortunately, I ran into a [regression](https://github.com/joyent/node/issues/9310) on OS X with Node v0.12.x
|
||||
that affects the command-line version of PCjs (specifically, the Node REPL), so I had to revert to v0.11.11.
|
||||
|
||||
Next, to update NPM:
|
||||
|
||||
[~/Sites/pcjs] sudo npm -g install npm@latest
|
||||
Miscellaneous Tips
|
||||
===
|
||||
|
||||
Connecting to a VMware Fusion Serial Port
|
||||
---
|
||||
|
|
|
|||
Loading…
Reference in a new issue