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1240: Difference between revisions
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There are two cartridge interfaces. One is for I/O devices; three were produced. The [[1200C01]] is the RS232C Comm pack. The [[1200C02]] is the GPIB comm pack. The [[1200C11]] is the parallel printer comm pack. It required the [[12RC01]] Printer Support ROM pack. The other cartridge interface was memory specific and was for ROM and RAM packs. Both 8K and 64K RAM packs with battery backup were made, note that the battery is a potential HazMat made by Catalyst Research and may destroy the cartridge when it leaks. There were also ROM packs that allow for mnemonic disassembly and state analysis of most microprocessors of the time. The ROM packs were made with a generic PCB that had two socketed ROMS and jumpers to select the size. | There are two cartridge interfaces. One is for I/O devices; three were produced. The [[1200C01]] is the RS232C Comm pack. The [[1200C02]] is the GPIB comm pack. The [[1200C11]] is the parallel printer comm pack. It required the [[12RC01]] Printer Support ROM pack. The other cartridge interface was memory specific and was for ROM and RAM packs. Both 8K and 64K RAM packs with battery backup were made, note that the battery is a potential HazMat made by Catalyst Research and may destroy the cartridge when it leaks. There were also ROM packs that allow for mnemonic disassembly and state analysis of most microprocessors of the time. The ROM packs were made with a generic PCB that had two socketed ROMS and jumpers to select the size. | ||
The following ROM packs where available: | |||
<div style="column-count:7;-moz-column-count:7;-webkit-column-count:7"> | |||
* [[12R01]] | |||
* [[12RC01]] | |||
* [[12RC02]] | |||
* [[12RC11]] | |||
* [[12RM01]] | |||
* [[12RM02]] | |||
* [[12RM03]] | |||
* [[12RM04]] | |||
* [[12RM05]] | |||
* [[12RM06]] | |||
* [[12RM08]] | |||
* [[12RM21]] | |||
* [[12RM22]] | |||
* [[12RM23]] | |||
* [[12RM24]] | |||
* [[12RM25]] | |||
* [[12RM26]] | |||
* [[12RM27]] | |||
* [[12RM31]] | |||
* [[12RM33]] | |||
* [[12RM41]] | |||
* [[12RM42]] | |||
* [[12RM43]] | |||
* [[12RM62A]] | |||
* [[12RM63]] | |||
* [[12RM71]] | |||
* [[12RM99]] | |||
</div> | |||
See the reference table for configuration options. | |||
There is a design for a multipurpose RAM/ROM pack, called SuperPack by Pavel Korensky, note the errata in the readme: [[File:Tek1240-SPDesign10.ZIP]] | There is a design for a multipurpose RAM/ROM pack, called SuperPack by Pavel Korensky, note the errata in the readme: [[File:Tek1240-SPDesign10.ZIP]] | ||
It uses either [[P6460]] or [[P6462]] 9-channel probes. | It uses either [[P6460]] or [[P6462]] 9-channel probes depending on the installed card. | ||
==Internals== | ==Internals== | ||
The 1240 is built around an [[Intel 8088]] as the control processor with 64K DRAM, and firmware in a bank of EPROMs. A separate I/O processor board is powered by a [[Zilog Z80]]A CPU. The display controller is built from individual TTL and ECL ICs. | The 1240 is built around an [[Intel 8088]] as the control processor with 64K DRAM, and firmware in a bank of EPROMs. A separate I/O processor board is powered by a [[Zilog Z80]]A CPU. The display controller is built from individual TTL and ECL ICs. | ||