alexf's articles:

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Apple 2 benchmark? 22 24 (9/3/2008 11:37:24 PM) comp.sys.apple2 After reading some posts about the different accelerators I wonder if there is a program to test how fast a particular accelerator really is. I don't have any commercial accelerators but I want to synthesize m... Alex

2e enhanced ROM listing 13 28 (7/24/2008 6:53:29 AM) comp.sys.apple2 Does anyone know if the 2e enhanced ROM listing is available anywhere? I was able to find the original one in the 2e manual, but not the enhanced version. The reason I ask is that I have made a new version of... Alex

FPGApple MMC bug reported 2 23 (2/29/2008 10:23:37 PM) comp.sys.apple2 A bug in FPGApple MMC was reported by Dirk Verwiebe: ----------- I made a fresh format and saved one file to the sd card. This was loaded without problems in the apple/zx core. Then i saved a second file to ... Alex

New FPGApple 6 27 (2/28/2008 8:06:16 AM) comp.sys.apple2 It so happened that I (mostly) made a new version of FPGApple. This time it is based on Altera Cyclone 2 - DE1 board. Main feature - it reads NIB images from an MMC/SD card formated as FAT16. Interchangeable ... Alex

Pseudo Disk update 7 33 (1/28/2007 2:18:20 AM) comp.sys.apple2 A very nasty bug was reported - writing didn't work in ProDOS mode. The ploblem is fixed now. Unfortunately the fix requires a modification to both the 6502 firmware and the AVR code. The problem was the timeo... Alex

a2e rom 8 28 (1/24/2007 3:39:18 AM) comp.sys.apple2 Standard 2e has 2 ROM chips, 8k each. There is also a 32K image on the 'net that claims to be a ROM for A2e. And my platinum A2e has one "CF" ROM chip that I suspect is 16K. So: 1. Is the "CF" chip a 23128 (1... Alex

Bug fixed in PseudoDisk][ 2 22 (12/26/2006 11:31:04 PM) comp.sys.apple2 Jean-Marc Boutillon found a bug in the boot code of the PseudoDisk: if 16 nibble images or more were present on an SD card, display should pause after each 16 files, but did not. I have fixed it. The updated s... Alex

PseudoDisk][ and IIGS 2 35 (12/8/2006 9:08:32 AM) comp.sys.apple2 One other person confirmed my observations regarding the IIGS. Bill Garber told me that he also noticed flaky behavior on a GS "getting much worse at high speed". To test the theory I had about putting the dat... Alex

PseudoDisk ][ and IIGS 1 19 (12/2/2006 1:32:54 AM) comp.sys.apple2 A bit of bad news. I tested the PD on a IIGS and it doesn't work well. Half the time it doesn't work at all. The other half I do get to my selection program prompt. Nibble images work after that but ProDOS most... Alex

New firmware for PseudoDisk / some problems 19 35 (11/22/2006 10:58:43 AM) comp.sys.apple2 The good news is I have new firmware that allows writing images to an SD card on top of the FAT16. The bad news is that there is a bug I can't figure out yet. The new scheme works like this. Volume images are... Alex

alexf's replies:

Items(98) /10 Next >> Last >|

Apple 2 benchmark? 22 24 (9/3/2008 11:37:24 PM) comp.sys.apple2 After reading some posts about the different accelerators I wonder if there is a program to test how fast a particular accelerator really is. I don't have any commercial accelerators but I want to synthesize m... alexf (262)

ZIP GSX 1.0.1 vs 1.0.2 39 37 (8/28/2008 7:24:05 PM) comp.sys.apple2 Hi, I have a couple of ZIP GSX boards that are version 1.0.1. Since i have had them i had always wondered what the difference was between this version and the 1.0.2 versions that came out later. I upgraded one... goggledrew (244)

Q: ADT-transfers on Franklin ACE 2200 + Super Serial Card II 14 26 (8/21/2008 4:49:22 PM) comp.sys.apple2 Hello! I have installed a Super Serial Card II in Slot#2 on a Franklin ACE2200 with SSC-switch settings according as adviced on: http://www.xs4all.nl/~gp/VirtualII/A2V2Help/A2V2Help.html I have the null-mo... locksmith64 (7)

2e enhanced ROM listing 13 28 (7/24/2008 6:53:29 AM) comp.sys.apple2 Does anyone know if the 2e enhanced ROM listing is available anywhere? I was able to find the original one in the 2e manual, but not the enhanced version. The reason I ask is that I have made a new version of... alexf (262)

Apple ][+ gravely ill - seeking assistance :( #2 #2 25 34 (5/30/2008 5:45:56 AM) comp.sys.apple2 From: N.N..Thayer@familynet-international.net Ugh, it's like a stake through my heart. My trusty Apple ][+, the one I've had practically since I was born, that I've used for endless recreation and to rip wh... N

another FPGA Apple II project 3 40 (5/15/2008 4:53:14 PM) comp.sys.apple2 http://www.applefritter.com/node/22873 found via a2central.com ... aiiadict (1731)

IIgs to arcade monitor experiment 12 27 (4/22/2008 5:13:37 PM) comp.sys.apple2 I'm my seemingly never-ending dallying with with IIgs video, I thought I'd try interfacing my IIgs to an analog 15khz 19" RGB Electrohome "Go7" arcade monitor I have here.. just to see how well it works (or no... js182 (282)

PS/2-Keyboard to Apple II converter 11 41 (4/17/2008 7:29:01 AM) comp.sys.apple2 Hello! I've made an easy to build PS/2-Keyboard to Apple II converter (based on a PIC 16F630), since the keyboard on my Apple was completely broken. Maybe it will of use to some of you: http://seb.riot.org/a... s11Q22008 (5)

Apple II vs Atari 800 102 56 (4/14/2008 12:36:56 AM) comp.sys.apple2 In 1980, Apple II graphics/sound looks limited.. Graphics on the games look very terrible... Sound is not good. Atari graphics/sound are better than Apple II.. Why did many companies make the games for Apple ... tseng4 (22)

Apple ][ to VGA monitor adapter board - looking for best color decoding method 51 21 (4/4/2008 10:02:09 PM) comp.sys.apple2 I've been working on a board to double each line of the Apple //e's video output so that it can be viewed on a normal VGA monitor. My goal was the perfect picture quality. To yield it, I sampled the Apple vide... ferdimh (73)