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builderpages:plasmo:68340:sbc68340r0:sbc68340r0home [2025/03/18 23:54]
plasmo |
builderpages:plasmo:68340:sbc68340r0:sbc68340r0home [2025/04/04 22:59] (current)
plasmo |
| ===== Introduction ===== | ===== Introduction ===== |
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| Prototype version of SBC68340 is here: | Prototype version of SBC68340 is [[:builderpages:plasmo:68340:prototype|here]]: |
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| [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=69a46c&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/68340/sbc68340r0/dsc_78190318.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/68340/sbc68340r0/dsc_78190318.jpg?direct&600x409|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_68340_sbc68340r0_dsc_78190318.jpg}}]] | [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=69a46c&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/68340/sbc68340r0/dsc_78190318.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/68340/sbc68340r0/dsc_78190318.jpg?direct&600x409|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_68340_sbc68340r0_dsc_78190318.jpg}}]] |
| ==== Software ==== | ==== Software ==== |
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| Tutor v1.3 | {{:builderpages:plasmo:68340:sbc68340r0:340bug_v03.zip|340Bug monitor v0.3}}, still under construction to remove redundant functions |
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| 340Bug monitor | {{:builderpages:plasmo:68340:sbc68340r0:tutor_v1_3_mod_for_sbc68340.zip|Tutor v1.3}} for Easy68K <- the original Tutor modified to use Easy68K's Trap15 services. type "go 44000" in 340Bug to invoke Tutor |
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| | CP/M demo. This {{:builderpages:plasmo:68340:sbc68340r0:340bug_cpm15000_bios340_flash_drive.zip|flash programming file}} contains 4 components; 340Bug monitor, CPM15000, BIOS340, and a small flash disk. Start CP/M68K with 'bo' command in 340bug monitor. There are two drives: drive A is flash drive with 3 files, init, pip, and stat; drive B is 64K RAM drive. |
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| | {{:builderpages:plasmo:68340:sbc68340r0:source_340bug_bios340_drivea_32k_cpm1500.zip|Source files}} for above CP/M demo |
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| | {{:builderpages:plasmo:68340:sbc68340r0:gkermit_for_driveb.zip|Gkermit for drive B}}. Load this s-record before issuing 'bo' command. Gkermit.68K will show up in drive B. <-note, gkermit won't work at 115200 baud. The serial clock should be 614400hz to enable 38.4K baud serial communication to run gkermit file transfer. |
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| | ---- |
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| | ===== SBC68340 Projects ===== |
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| | ==== Enable RC2014 expansion bus ==== |
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| | The P6 connector was originally designed as test connector for logic analyzer. Its pin assignments are similar to 40-pin RC2014 expansion bus, but there are significant differences that prevent interface with standard RC2014 expansion boards. Here are list of engineering changes to enable RC2014 boards. |
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| | Data bus changed to D[15..8] |
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| | nM1 pulled up to 4.7K |
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| | nMREQ cut from nAS, then pulled up to 4.7K |
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| | nRD cut from nDSACK0, then connected to nRD |
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