Basic bank statement #340
Basic bank statement #340
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basic/code17.s
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| txa | ||
| ldx curbank | ||
| ldy #0 | ||
| jsr stash |
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combine to jsr & rts to jmp stash
basic/token2.s
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| @@ -81,6 +81,7 @@ reslst2 .byt "MO", 'N' + $80 | |||
| .byt "BLOA", 'D' + $80 | |||
| .byt "BVLOA", 'D' + $80 | |||
| .byt "BVERIF", 'Y' + $80 | |||
| .byt "BAN", 'K'+$80 | |||
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"space plus space" for consistency
basic/init.s
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| @@ -14,6 +14,7 @@ nready jmp readyx | |||
| init jsr initv ;go init vectors | |||
| jsr initcz ;go init charget & z-page | |||
| jsr initms ;go print initilization messages | |||
| stz curbank ;set default value for BANK statement | |||
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spaces for indenting the comments, please
cfg/x16.cfginc
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| @@ -33,7 +33,8 @@ KVECTORS: start = $0314, size = $0020; # KERNAL vectors | |||
| /* $0334-$03FF: variables and RAM code (not available for *legacy* GEOS apps) */ | |||
| KVAR2: start = $0334, size = $0057; # KERNAL: screen editor table | |||
| KERNRAM2: start = $038B, size = $003F; # KERNAL: banked IRQ, fetch, stash | |||
| /* start = $03CA, size = $0002; # reserved for KERNAL growth */ | |||
| BVARS2: start = $03CA, size = $0001; # BASIC | |||
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no need to create a new segment; at this point, it's okay to extend the BVARS segment by 1 byte, moving FPVARS up by 1 byte – we don't try to guarantee binary compatibility with these addresses yet
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I think I fixed all comments from @mist64 |
This reverts commit abfd291.
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By mistake a change in the GEOS launch code intended for my other PR (fix-geos) had sneaked in here. It was removed with git revert (commit 780b786) above. |
replaced tabs with spaces
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Should the LOAD commands also consider the BANK ? |
LOAD and SAVE could benefit from this, yes! |
Implementation of a new BANK statement in BASIC.
The bank set by BANK is used by SYS, POKE and PEEK if the target address is >= $a000
Example (starts GEOS by calling $C000 in ROM bank 3):