| | JGH | IMC | Andrew Owen | Pera Putnik | . | . | .
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Big 12 Bugs
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| Division losing bit34 | fixed | | |
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| -65536 equal to -1 | fixed | | |
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| unused ZX81 program name routine | reused | | |
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| unused REC_EDIT routine | | | |
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| CHR$ 8 | fixed | | |
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| CHR$ 9 | fixed | | |
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| 'scroll?'/'Start tape' | fixed | | |
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| Current line cursor | fixed | | |
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| Leading space | | | |
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| K-mode error | no K-mode | | |
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| SCREEN$ | fixed | | |
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| STR$ | fixed | | |
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| CLOSE | rewritten | | |
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| ---- | | | |
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| DEC_TO_FP inaccuracy | fixed | | |
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| NMI bug | fixed | | |
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| Simple strings in SAVE DATA | | | |
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| ---- | | | |
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| SAVE "name" LINE | | | |
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| CLEAR should also RESTORE | | | |
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| Negative DRAW coordinates | | | |
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| Negative POINT coordinates | | | |
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| Negative ATTR coordinates | | | |
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| Negative SCREEN$ coordinates | | | |
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| RESTORE line>16383 | | | |
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| Statement lost when RUN/GOTO/GOSUB line>32767 | | | |
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| Colours go to current stream instead of "S" | fixed | | |
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| INPUT sends comma | | | |
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| INTs arrume IY=&5C3A | | | |
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| The PR_CC error | | | |
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| COPY clearing printer buffer | No ZX Printer | | |
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| COPY can result in 'Out of screen' | No ZX Printer | | |
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| The MAIN-4 COPY-BUFF | | | |
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| The MAIN-4 HALT problem | | | |
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| The WRITE TO ROM by SKIP_CONS | fixed | | |
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| The WRITE TO ROM by the SCROLL | fixed | | |
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| Calculator literal &3C unusable | used for STR$~ | | |
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| INKEY$ #0 | fixed | | |
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| Graphics+V, W, X, Y, Z give keywords | | | |
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| LIST 40000 silently changed to LIST 7232 | | | |
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| ED-RIGHT can move between colour codes | | | |
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| INPUT should use #1 | fixed | | |
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| Microdrive crashes when out of memory | fixed | | |
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Extensions
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| Tokeniser | YES | | |
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| Colours out of range | ignored | | |
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| Spaces in token table | removed | | |
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| Startup colours | white on black | | |
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| Catalogue tape | CAT | | |
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| Hex input | &xxxx | | |
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| Hex output | PRINT~ and STR$~ | | |
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| Character set | BBC | | |
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| NMI routine | none | | |
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| Monitor/debugger | | | |
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Other extensions
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