 | | Re: Motor Control Register (0xf000)
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(...) As it is, it seems[1] that two of the three NAND gates in the 74HC10 are being used as a driver for speaker output (it's odd that it's two, not one though). So, this leaves one three input NAND gate to do the decoding. Now that I think about (...) (22 years ago, 14-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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<snip> (...) Ok, thank you for the explaination! I am thinking that the Memory Manager would need some rework to support this, since the start of memory is currently established at compile time. I will have to take a look at this (time allowing). (...) (22 years ago, 14-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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(...) I have implemented what Mark Riley has suggested. I submitted a patch to the patches section at the sourceforge project page. The changes are quite small but require some tricky tweaks to the build process. I have only minimally tested it and (...) (22 years ago, 14-Nov-02, to lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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(...) While you are at it you could also make a remark near the explanation of the f000 motor control register, and make it clear that this is a hardware function. When I started to use this extra memory in leJOS I missed the remark at the very end (...) (22 years ago, 14-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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(...) In that case, why didn't the RCX designers use an 8 input NAND to decode their addresses, to leave more of the RAM usable? Maybe there werent aware of this possibility? Jürgen (22 years ago, 14-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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