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A list of errors and their correction in VDP1 User's Manual (ST-013-R3-061694).
Page numbers are those of the document, not those of the PDF file.
Page numbers are those of the document, not those of the PDF file.
Where | Original text | Correction |
p. (6), 33 and 47 | "Erase/Write Upper-Right Coordinate Register" | "Erase/Write Lower-Right Coordinate Register" |
p. 23 and 58 | "TVHR" | "TVMR" |
p. 37 and 134 Table "Screen Modes" Lines where column "Name" contains "Normal", "Rotation 16", "Rotation 8" | Column "Resolution" contains : "320x224 320x240 352x224 352x240" | Column "Resolution" contains : "320x224 320x240 352x224 352x240 640x224 640x240 704x224 704x240" |
p. 39 | "Set the value of the VBE and FCT bits to “0.”" | "Set the value of the VBE, FCM, and FCT bits to “0”." |
p. 39 | "Manual erase/write of the frame buffer is specified by writing “0” to the VBE, FCM and FCT registers." | "Manual erase/write of the frame buffer is specified by writing “0” to the VBE and FCT registers and “1” to the FCM register." |
p. 40 | "If the timing for frame change is known in advance as in normal, high resolution, and interlace, specify erase & change and perform erase/write during the display period. In this case, erase/write of the entire display screen is possible." | "If the timing for frame change is known in advance in normal or high resolution screen modes, specify erase then change and perform erase/write during the display period. In this case, erase/write of the entire display screen is possible." |
p. 40 | "7) Return VBE to “0” after the V-blank OUT interrupt to stop V-blank erase." | "7) Return VBE to “0” after the V-blank OUT interrupt to prevent V-blank erase to occur automatically in the next V-blank." |
p. 46 | "When parts are written to the frame buffer, the VDP1 automatically erases the frame buffer." | "VDP1 can erase automatically the display frame buffer while writing parts to the draw frame buffer." |
p. 49 | "The number of pixels required for V-blank erase is expressed by (X3 – X1 + 1) x (Y3 – Y1 + 1) x 8" | "The number of pixels required for V-blank erase in a 16 bpp frame buffer is expressed by (X3 – X1) x (Y3 – Y1 + 1) x 8" |
p. 49 | "The number of pixels that can be used in V-blank erase is given by" | "The number of pixels that can be used in V-blank erase in a 16 bpp frame buffer is given by" |
p. 50 | "Table 4.5 Number of Pixels that Can Be Used in V-Blank Erase (in Non-Interlace Display)" | "Table 4.5 Number of Pixels that Can Be Used in V-Blank Erase in a 16 bpp frame buffer (in Non-Interlace Display)" |
p. 62 | "If RGB code, MSB = 0. If color bank code, MSB = 0 if RGB code is mixed, and MSB can be either 0 or 1 if RGB is not mixed. Set MSB to match data processing by the VDP2." | "If the frame buffer can use RGB codes (see Sprite color mode bit, p. 207 of VDP2 User's Manual), RGB codes MSB must be set to 1 and color bank code MSB must be set to 0. If the frame buffer is all in palette format, set MSB according to its use by VDP2 (see Sprite types, p. 200 of VDP2 User's Manual)." |
p. 79 | "Clipping Mode Bit (Clip): bit 10" | "User Clipping Enable Bit (Clip): bit 10" |
p. 79 | "User Clipping Enable Bit (Cmod): bit 9" | "Clipping Mode Bit (Cmod): bit 9" |
p. 84 Figure 6.7 Drawing Area | "Upper-right coordinate of user clipping" | "Upper-left coordinate of user clipping" |
p. 90 and 91 | "Because the draw pixel data is color bank code, color calculation cannot be performed." | "Color calculation can be executed when the color code is color bank code, but for other modes than replace and shadow, on-screen results depend on the ordering of VDP2 color RAM." |
p. 93 | "Except for color calculation of replace and shadow, color calculation can only be performed when the color code of the original picture is RGB code. Color calculation can be executed when the color code is color bank code, but the results are not guaranteed." | "Except for color calculation of replace and shadow, color calculation can only be fully determined by VDP1 when the color code of the original picture is RGB code. Color calculation can be executed when the color code is color bank code, but on-screen results depend on the ordering of VDP2 color RAM." |
p. 94 and 148 Unnamed table Lines where column "Background MSB" contains "0" | Column "Background" contains "Not restricted". | Column "Background" contains "Palette". |
p. 96 Figure "Examples of Color Calculation" Drawing under "Color Calculation mode= 3" | "Half-Luminance" | "Half-Transparent" |
p. 97 | "The color code is valid only when the frame buffer is color bank code (this is because the MSB is used for shadow enable and window enable in the VDP2, eliminating an RGB recognition bit), thus making it impossible to perform color calculation. Specify replace for color calculation." | "On-screen results are guaranteed only when the frame buffer is all in palette format (see Sprite color mode bit, p. 207 of VDP2 User's Manual). This is because the sprite pixels MSB is used for shadow or window processing by VDP2, instead of an RGB recognition bit." |
p. 105 | "Vertex (B), X coordinates (XA); or display, X width (XB)" | "Vertex (B), X coordinates (XB); or display X width (XB)" |
p. 105 | "Vertex (B), Y coordinates (YA); or display, Y width (YB)" | "Vertex (B), Y coordinates (YB); or display Y width (YB)" |
p. 105 | "Extend the code with the upper 6 bits." | "Extend the code to the upper 5 bits." |
p. 159 | "Set the lower 2 bits of lookup tables to “00.”" | "Set the lower 2 bits of lookup table address to “00”." |
p. 159 | "When the frame buffer is set to 8 bits/pixel, set the MSB ON bit (MON) to “1.”" | "When the frame buffer is set to 8 bits/pixel, set the MSB ON bit (MON) to “0”." |
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