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annotate docs/readme-4.0.txt @ 482:9c24336fa76c
Correct cycle counts for W relative indexing modes
Actually handle the 6309 specific W relative indexing modes (,W; n,W; ,W++;
,--W) in the cycle count calculation code. These work differently than the
regular indexing modes so it's necessary to handle their bit patterns
specially. (The bits that would normally select the base register are used
instead to select the operation on W.)
author | William Astle <lost@l-w.ca> |
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date | Thu, 24 Jan 2019 18:24:03 -0700 |
parents | 2c24602be78f |
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1 With LWTOOLS 4.0, a substantial reorganization of the project has occurred. |
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2 This document serves to explain the reasoning behind the various changes. |
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3 |
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4 The most obvious change is that the gnu auto tools have been eliminated. |
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5 While they proved useful for initial distribution of the software, |
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6 particularly for construction of the win32 binaries, they have since proved |
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7 to add an unacceptable level of complexity to every aspect of development |
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8 from merely tinkering with source files to doing complete releases. Thus, |
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9 the auto tools have been ditched in favour of specific hand tuned help where |
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10 required. |
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11 |
2c24602be78f
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12 The other substantial change is that the source code repository has been |
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13 recreated from scratch. The old repository was full of cruft from various |
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14 revision control systems that were used over the years (CVS, Subversion, and |
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15 Mercurial). It was felt that starting a new Mercurial repository with a |
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16 completely clean slate would simplify matters substantially. Thus, the old |
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17 repository now serves as an archive. |