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Routines |
| Prev: 5B2F | Up: Map | Next: 5B8B |
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Read the game header from tape.
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| TapeLoader_Game | 5B30 | LD IX,$5B1E | Point IX at the tape header (5B1E), request 11 bytes, and ask the ROM routine to load rather than verify. | |
| 5B34 | LD DE,$0011 | |||
| 5B37 | XOR A | |||
| 5B38 | SCF | |||
| 5B39 | CALL TapeLoader_LoadBytes | Call TapeLoader_LoadBytes to load the next tape block. | ||
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Give up unless the header loaded.
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| 5B3C | LD A,($5B2F) | Reset the Spectrum unless the tape load result (5B2F) is 01. | ||
| 5B3F | DEC A | |||
| 5B40 | JP NZ,$0000 | |||
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The header must describe a code block.
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| 5B43 | LD A,($5B1E) | Reset the Spectrum unless the header type at 5B1E is 03. | ||
| 5B46 | CP $03 | |||
| 5B48 | JP NZ,$0000 | |||
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Load the game block named by the header.
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| 5B4B | LD IX,($5B2B) | Take the load address from 5B2B and the length from 5B29, and load that block as data. | ||
| 5B4F | LD DE,($5B29) | |||
| 5B53 | LD A,$FF | |||
| 5B55 | SCF | |||
| 5B56 | CALL TapeLoader_LoadBytes | Call TapeLoader_LoadBytes to load the next tape block. | ||
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Return to BASIC only if the game block loaded.
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| 5B59 | DI | Disable interrupts and reset the Spectrum unless the tape load result (5B2F) is 01. | ||
| 5B5A | LD A,($5B2F) | |||
| 5B5D | DEC A | |||
| 5B5E | JP NZ,$0000 | |||
| 5B61 | RET | Return. | ||
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Loads the loading-screen header and then the screen at 4000 and resets the Spectrum if either load fails.
Read a tape header for the loading screen.
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| TapeLoader_Screen | 5B62 | LD IX,$5B1E | Point IX at the tape header (5B1E), request 11 bytes, and ask the ROM routine to load rather than verify. | |
| 5B66 | LD DE,$0011 | |||
| 5B69 | XOR A | |||
| 5B6A | SCF | |||
| 5B6B | CALL TapeLoader_LoadBytes | Call TapeLoader_LoadBytes to load the next tape block. | ||
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Give up unless that header loaded.
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| 5B6E | LD A,($5B2F) | Reset the Spectrum unless the tape load result (5B2F) is 01. | ||
| 5B71 | DEC A | |||
| 5B72 | JP NZ,$0000 | |||
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Load the picture into the display file.
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| 5B75 | LD IX,$4000 | Point IX at the screen (4000) and load 1B00 bytes as data. | ||
| 5B79 | LD DE,$1B00 | |||
| 5B7C | LD A,$FF | |||
| 5B7E | SCF | |||
| 5B7F | CALL TapeLoader_LoadBytes | Call TapeLoader_LoadBytes to load the next tape block. | ||
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Return only if the screen loaded.
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| 5B82 | DI | Disable interrupts and reset the Spectrum unless the tape load result (5B2F) is 01. | ||
| 5B83 | LD A,($5B2F) | |||
| 5B86 | DEC A | |||
| 5B87 | JP NZ,$0000 | |||
| 5B8A | RET | Return. | ||
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