ziggurat29
AlphaSmart001-20230301b.lstCurrent disassembly listing; work in progress, will update periodicallyplain - 306.99 kB - 03/01/2023 at 19:49 |
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Holes-001.pngfor the curious; holes in the scancode mapPortable Network Graphics (PNG) - 5.54 kB - 02/25/2023 at 14:26 |
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AlphaSmartPro-keyboard-002.jpgKeyboard with AlphaSmart Pro scan codes overlaid!JPEG Image - 287.21 kB - 02/22/2023 at 23:03 |
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lt1173.pdfDC-DC converter used to boost 3v to 5v, and also provides low battery indication.Adobe Portable Document Format - 261.73 kB - 02/18/2023 at 17:47 |
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AlphaSmart001.HEXthe ROM dump! courtesy of my friend [Eric]hex - 22.51 kB - 02/15/2023 at 19:52 |
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AlphaSmart Pro - Owners Manual.pdfThe product manual to this gizmo. This is seems to be for a later version of the firmware than I have because there's a bunch of documented features that are not present in this unit. But it's still handy. Just take it with an appropriate grain of salt.Adobe Portable Document Format - 276.04 kB - 02/15/2023 at 19:51 |
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Samsung_LCD_2138A.pdfdatasheet for the Mitsubishi LCD conroller. conceptually similar to the HD44780, but different.Adobe Portable Document Format - 1.34 MB - 02/15/2023 at 19:49 |
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1991_M68HC11RM_Reference_Manual_Rev3.pdfReference Manual for 68HC11; provides more details with instruction set. than the datasheet.Adobe Portable Document Format - 29.59 MB - 02/15/2023 at 19:48 |
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MC68HC711D3.pdfdatasheet for the 68HC11, particularly the 'D' variants used in this device.Adobe Portable Document Format - 1.51 MB - 02/15/2023 at 19:47 |
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ROM Disassembly - AlphaSmart Pro
Wherein I disassemble the ROM from a vintage typewriter-thing