+dhe Posted June 19, 2021 Share Posted June 19, 2021 I have two Horizon Ram Disks. One lives with a Geneve and one lives with a TI. It's been several years since I have done much on the systems. I'm assuming, like changing oil, no would be a good time to give them new batteries - if they aren't soldered in. I believe I use gencfg to find and format on the Geneve, and Tim's updated software suite on the TI. Can someone point me to the Archive for the updated suite that Tim wrote for the Horizon 4000B, and does anyone have battery recommendations? My local Radio Shack went out of business several years ago. Thanks! Quote Link to comment Share on other sites More sharing options...
RickyDean Posted June 19, 2021 Share Posted June 19, 2021 (edited) 2 hours ago, dhe said: I have two Horizon Ram Disks. One lives with a Geneve and one lives with a TI. It's been several years since I have done much on the systems. I'm assuming, like changing oil, no would be a good time to give them new batteries - if they aren't soldered in. I believe I use gencfg to find and format on the Geneve, and Tim's updated software suite on the TI. Can someone point me to the Archive for the updated suite that Tim wrote for the Horizon 4000B, and does anyone have battery recommendations? My local Radio Shack went out of business several years ago. Thanks! I think this is what your looking for dhe. Are the batteries Ni/Cad, or something else. If ni/cad's then Amazon has good prices on them, and Radio Shack still has a Web presence as well as some small stores in mall's. I would order 3 inline battery holders and solder them train fashion, then bond them to the ramdisk, solder the connections and lock and load. Edited June 19, 2021 by RickyDean spelling 1 1 Quote Link to comment Share on other sites More sharing options...
+dhe Posted June 19, 2021 Author Share Posted June 19, 2021 Now that I have one gotek going, it's time to update my 8.14F diskette. Quote Link to comment Share on other sites More sharing options...
atrax27407 Posted June 19, 2021 Share Posted June 19, 2021 (edited) If I was changing batteries, I would get a 3.6V Lithium with solder leads and take out the NI-Cads and holders entirely. The Lithium batteries are spec'ed for 5 years but the one in my HRD16 lasted 15 years before it needed to be changed. Digi-Key has a wide selection of sizes. The Horizon 4000B has a provision for using one and they can also be used in earlier Horizon models. I would use the latest version of ROS as well. Edited June 19, 2021 by atrax27407 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted June 19, 2021 Share Posted June 19, 2021 If using the lithium battery, just make sure you disable the recharge circuitry. On battery holders, I use some plastic-frame holders that work really well. They come as single holders that should be usable on older cards, and the HRD4000B works with those or with a triple-battery holder (I have built them with both types to ensure compatibility). 2 Quote Link to comment Share on other sites More sharing options...
+dhe Posted June 20, 2021 Author Share Posted June 20, 2021 A couple of additional questions: 1) For NiCadd batteries, which are good ones to use for the Horizon application? ** Bud Mills old build docs, just call for AAA NiCadds, I think most people picked theirs up at Radio Shack. ** 2) How many years between replacements? 3) What's the minimum number of hours per week, bi-weekly, month; should the batteries be charged to insure reliable operations? For Geneve Owners, what exactly goes in the DSR area? 1 Quote Link to comment Share on other sites More sharing options...
+InsaneMultitasker Posted June 20, 2021 Share Posted June 20, 2021 29 minutes ago, dhe said: For Geneve Owners, what exactly goes in the DSR area? Not much. The 6K ros stub (that originated from the Hoddie ramdisk eprom) installed by Form3MEG and FORM v1.23 was only used for boot purposes. GenCFG and MDOS 7.30 whittled the necessary information down to a few flags and data points and a few fake routines to accommodate the Geneve Boot EPROM. The spoiler contains what is saved in the DSR space by GenCFG. Note: when ROMPAGE is active, if a program calls the HD device or low level opcode >10, the fake IO routines should simply return, forcing DSRLNK to pass the call to the next peripheral. ; This stub is copied to the ramdisk 8k/32k SRAM ; ROS8K DATA >AA06 4000 valid|ver OR >9640 (no boot) DATA 0 4002 not used DATA 0 4004 powerup DATA 0 4006 not used DATA >402C 4008 level 3 table DATA >401E 400a level 2 table DATA 0 400c usr int DATA 0 400e * * New configuration table to simplify future BOOT and format routines * FLAG7 DATA >9901 4010 Special flag to indicate ramdisk 7.0 format F#PART DATA >0000 4012 0=no floppy partition; <>0 floppy size H#PART DATA >0000 4014 0=no hard partition; <>0 partition START sector H#SIZE DATA >0000 4016 0=no hard partition; <>0 partition size CRU DATA >0000 4018 CRU of this ramdisk for comparison later OPEN1 DATA 0 401A OPEN2 DATA 0 401C * * The device tables will only be needed for backward compatibility. * * LEVEL 2 IO table * LEV2 DATA >4024 401e next routine (HARD1) DATA >4036 4020 subroutine loc (FAKE) DATA >0110 4022 sub name HARD1 DATA 0 4024 no more routines DATA >4036 4026 (FAKE) DATA >0160 4028 HARD RAMDISK NEW OPCODE to avoid selecting wrong card DATA 0 402a * * Level 3 IO table * LEV3 DATA 0 402c no other entries DATA >4036 402e routine (FAKE) ;4036! not 4034! BYTE >02,'H','D',0 4030 DATA 0 4034 * * Fake routine, just in case * FAKE RT 4036 Return to caller; no routine; pass to next dev DATA 0 1 Quote Link to comment Share on other sites More sharing options...
senior_falcon Posted June 21, 2021 Share Posted June 21, 2021 (edited) On 6/19/2021 at 12:16 PM, Ksarul said: If using the lithium battery, just make sure you disable the recharge circuitry. On battery holders, I use some plastic-frame holders that work really well. They come as single holders that should be usable on older cards, and the HRD4000B works with those or with a triple-battery holder (I have built them with both types to ensure compatibility). Lithium batteries are NOT forgiving of overcharging and the fires that result can be hard to put out. Disconnecting the recharge circuitry eliminates that possibility. The chains like Target, Walmart and others sell rechargeable NiMH batteries which will work fine in this application. Edited June 21, 2021 by senior_falcon 1 Quote Link to comment Share on other sites More sharing options...
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