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pearce_jj's latest activity

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    pearce_jj reacted to Kanpai's post in the thread IBM 5155 keyboard cable... very oily with Like Like.
    I noticed the same oily substance on the cable of one of mine 5155. According to mass spectra analysis I conducted, this is likely...
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    pearce_jj reacted to Hak Foo's post in the thread ISA USB board with Like Like.
    Been doing some light cleanup today. The startup messages are a bit terser (I didn't like that we were getting to the point where were...
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    Re main battery - the mAh capacity really doesn't matter - it just defines the run-time. More mAh will give more run time. Provided it's...
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    D-cell type are still available as used in some home alarm systems, for example...
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    pearce_jj reacted to ross.dykes's post in the thread Tandy 1400 Lo-Tech XT-CF Help with Like Like.
    Yes, it's been working just fine as long as only 1 floppy drive is installed. It does work with both installed if you modify the xt-ide...
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    pearce_jj reacted to Hak Foo's post in the thread ISA USB board with Like Like.
    Uggh. I see the issue now. The way you described it originally, I thought FDISK was failing to launch at all. I was able to replicate...
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    pearce_jj replied to the thread ISA USB board.
    At least on 5160, it will need to use slot 8 or have a physical connection to the ROM socket(s). I’ve documented why here...
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    pearce_jj replied to the thread ISA USB board.
    One challenge might be that the system board buffers make placement difficult. On 5160 for example, we cannot DMA from slot 8 but I...
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    pearce_jj reacted to Hak Foo's post in the thread ISA USB board with Like Like.
    Well, the point of DISK_IN_BOUND was to be able to blow up early in a request if you asked for a sector beyond what the disc's reported...
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    pearce_jj replied to the thread ISA USB board.
    The shadow function can potentially improve performance only on machines with 16-bit memory bus - 8086, v30, and 286 machines basically.
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    I wanted to share my latest project, the MCL86+, which is a drop-in 8088 replacement board for the IBM PC/XT and clones. It uses a...
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    pearce_jj replied to the thread ISA USB board.
    In my view it would be interesting to look at the file system capabilities of these chips themselves, since regardless of how tiny and...
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    pearce_jj replied to the thread ISA USB board.
    I've not costed these yet as the 1st draft designs are only just complete. The intention is to run a short batch of engineering samples...
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    pearce_jj replied to the thread ISA USB board.
    Both the single socket and the new two socket version will be 4 layer boards and entirely SMD based. Bare PCBs account for a tiny...
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    pearce_jj replied to the thread ISA USB board.
    Quick first look at what I've been working on - dual socket USB based storage adapter. One internal, one external. The component count...
    • Lo-tech-USB-Storage-Adapter.jpg
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