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Diffstat (limited to 'c/src/lib/libbsp/m68k/efi68k/README')
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diff --git a/c/src/lib/libbsp/m68k/efi68k/README b/c/src/lib/libbsp/m68k/efi68k/README new file mode 100644 index 0000000000..7a431fd48b --- /dev/null +++ b/c/src/lib/libbsp/m68k/efi68k/README @@ -0,0 +1,48 @@ +# +# $Id$ +# + +Description: efi68k +============ +CPU: MC68HC000 @16MHz +RAM: 256k +ROM: 256k + + Based upon a 16MHz 68HC000, efi332 is a minimally configured 4x6 +inch single board computer. It includes the following major +components: (a) 256k SRAM (km681000l), (b) 256 EPROM (27C010), +(c) DP8570A (clock/timer/calendar), (d) MAX791 (cpu supervisory chip +with battery backup switch-over and watch dog timer), and +(e) NS16550DN (UART). The following interrupt functions have also been +incorporated: UART, TIMER, Watch Dog, and Low Line voltage (trips at +4.85V; enough time to save the cpu reg before reset is asserted on +power down). + The schematic for efi68k is freely available via e-mail. Send +"index diy_efi" to majordomo@coulomb.eng.ohio-state.edu. Retrieve the +files related to 68hc000-1.00 with the "get diy_efi <filename>" +command. efi68k does not have an available printed circuit board, but +can be wire-wrapped in about four days. Cost is about $100US. + +For more information, I can be contacted at the address below. + + +TODO: +===== +- add separate interrupt stack (low priority). + +- add the "tm27 vector" ... can we use a trap instruction? + +- generate include/coverhd.c to preform the tmtest. + +- the interrupt drive I/O should be integrated into the RTEMS. + +- finish the ROM memory model. + + John S Gwynne + Gwynne.1@osu.edu +_______________________________________________________________________________ + T h e O h i o - S t a t e U n i v e r s i t y + ElectroScience Laboratory, 1320 Kinnear Road, Columbus, Ohio 43212, USA + Telephone: (614) 292-7981 * Fax: (614) 292-7297 +------------------------------------------------------------------------------- + |